WorldWideScience

Sample records for undergraduate stu dents

  1. StuDIY Online

    DEFF Research Database (Denmark)

    2015-01-01

    StuDIY Online er kurser i akademisk argumentation, problemformulering, analyse og akademisk sprog. Kurserne er frit tilgængelige for alle via Blackboard på AU......StuDIY Online er kurser i akademisk argumentation, problemformulering, analyse og akademisk sprog. Kurserne er frit tilgængelige for alle via Blackboard på AU...

  2. 4 hovedproblemer med STU

    DEFF Research Database (Denmark)

    Jensen, Niels Rosendal

    2012-01-01

    Kommentaren oplister fire hovedproblemer ved den Særligt Tilrettelagte Ungdomsuddannelse, nemlig (1) beskrivelsen af målgruppen, (2) de unges forsørgelsesgrundlag, (3) hvad der følger efter én afsluttet STU, og (4) "lovjunglen" - manglende samspil mellem mange lovgivninger.......Kommentaren oplister fire hovedproblemer ved den Særligt Tilrettelagte Ungdomsuddannelse, nemlig (1) beskrivelsen af målgruppen, (2) de unges forsørgelsesgrundlag, (3) hvad der følger efter én afsluttet STU, og (4) "lovjunglen" - manglende samspil mellem mange lovgivninger....

  3. Dent disease

    Directory of Open Access Journals (Sweden)

    Rina R Rus

    2017-04-01

    Full Text Available Dent disease is an x-linked disorder of proximal renal tubular dysfunction that occurs almost exclusively in males. It is characterized by significant, mostly low molecular weight proteinuria, hypercalciuria, nephrocalcinosis, nephrolithiasis, and chronic kidney disease. Signs and symptoms of this condition appear in early childhood and worsen over time. There are two forms of Dent disease, which are distinguished by their genetic cause and pattern of signs and symptoms (type 1 and type 2. Dent disease 2 is characterized by the features described above and also associated with extrarenal abnormalities (they include mild intellectual disability, hypotonia, and cataract. Some researchers consider Dent disease 2 to be a mild variant of a similar disorder called Lowe syndrome.We represent a case of a 3-year old boy with significant proteinuria in the nephrotic range and hypercalciuria. We confirmed Dent disease type 1 by genetic analysis.

  4. STU black holes and string triality

    International Nuclear Information System (INIS)

    Behrndt, K.; Kallosh, R.; Rahmfeld, J.; Shmakova, M.; Wong, W.K.

    1996-01-01

    We find double-extreme black holes associated with the special geometry of the Calabi-Yau moduli space with the prepotential F=STU. The area formula is STU-moduli independent and has [SL(2,Z)] 3 symmetry in space of charges. The dual version of this theory without a prepotential treats the dilaton S asymmetric vs T,U moduli. We display the dual relation between new (STU) black holes and stringy (S|TU) black holes using a particular Sp(8,Z) transformation. The area formula of one theory equals that of the dual theory when expressed in terms of dual charges. We analyze the relation between (STU) black holes to string triality of black holes: (S|TU), (T|US), (U|ST) solutions. In the democratic STU-symmetric version we find that all three S, T, and U duality symmetries are nonperturbative and mix electric and magnetic charges. copyright 1996 The American Physical Society

  5. STU Black Holes and String Triality

    Energy Technology Data Exchange (ETDEWEB)

    Shmakova, Marina

    2003-05-23

    We found double-extreme black holes associated with the special geometry of the Calabi-Yau moduli space with the prepotential F = STU. The area formula is STU-moduli independent and has [SL(2, Z)]{sup 3} symmetry in space of charges. The dual version of this theory without prepotential treats the dilaton S asymmetric versus T,U-moduli. We display the dual relation between new (STU) black holes and stringy (S|TU) black holes using particular Sp(8,Z) transformation. The area formula of one theory equals the area formula of the dual theory when expressed in terms of dual charges. We analyze the relation between (STU) black holes to string triality of black holes: (S|TU), (T|US), (U|ST) solutions. In democratic STU-symmetric version we find that all three S and T and U duality symmetries are non-perturbative and mix electric and magnetic charges.

  6. StuDIY Online - in english

    DEFF Research Database (Denmark)

    2016-01-01

    StuDIY Online er engelske kurser i akademisk argumentation, problemformulering, analyse og akademisk sprog. Kurserne er frit tilgængelige for alle via Blackboard på AU......StuDIY Online er engelske kurser i akademisk argumentation, problemformulering, analyse og akademisk sprog. Kurserne er frit tilgængelige for alle via Blackboard på AU...

  7. 25-year analysis of a dental undergraduate research training program (BSc Dent) at the University of Manitoba Faculty of Dentistry.

    Science.gov (United States)

    Scott, J E; de Vries, J; Iacopino, A M

    2008-12-01

    Research in the context of the dental school has traditionally been focused on institutional/faculty accomplishments and generating new knowledge to benefit the profession. Only recently have significant efforts been made to expand the overall research programming into the formal dental curriculum, to provide students with a baseline exposure to the research and critical thinking processes, encourage evidence-based decision-making, and stimulate interest in academic/research careers. Various approaches to curriculum reform and the establishment of multiple levels of student research opportunities are now part of the educational fabric of many dental schools worldwide. Many of the preliminary reports regarding the success and vitality of these programs have used outcomes measures and metrics that emphasize cultural changes within institutions, student research productivity, and student career preferences after graduation. However, there have not been any reports from long-standing programs (a minimum of 25 years of cumulative data) that describe dental school graduates who have had the benefit of research/training experiences during their dental education. The University of Manitoba Faculty of Dentistry initiated a BSc Dent program in 1980 that awarded a formal degree for significant research experiences taking place within the laboratories of the Faculty-based researchers and has continued to develop and expand this program. The success of the program has been demonstrated by the continued and increasing demands for entry, the academic achievements of the graduates, and the numbers of graduates who have completed advanced education/training programs or returned to the Faculty as instructors. Analysis of our long-term data validates many recent hypotheses and short-term observations regarding the benefits of dental student research programs. This information may be useful in the design and implementation of dental student research programs at other dental schools.

  8. STU black holes and SgrA*

    International Nuclear Information System (INIS)

    Cvetič, M.; Gibbons, G.W.; Pope, C.N.

    2017-01-01

    The equations of null geodesics in the STU family of rotating black hole solutions of supergravity theory, which may be considered as deformations of the vacuum Kerr metric, are completely integrable. We propose that they be used as a foil to test, for example, with what precision the gravitational field external to the black hole at the centre of our galaxy is given by the Kerr metric. By contrast with some metrics proposed in the literature, the STU metrics satisfy by construction the dominant and strong energy conditions. Our considerations may be extended to include the effects of a cosmological term. We show that these metrics permit a straightforward calculation of the properties of black hole shadows.

  9. Branqueamento em dentes endodonciados

    OpenAIRE

    Melício, Joianne Sandrine Lopes

    2014-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária Uma vez que a procura pela estética dentária vem aumentando significativamente, houve necessidade de procurar alternativas para a recuperação da coloração natural dos dentes quando esta é perdida por inúmeros fatores. O Branqueamento dentário, entre outras técnicas, tornou-se uma possibilidade para restaurar a perda da cor e tonalida...

  10. Dental fluorosis knowleDge anD perception among stuDents of the ...

    African Journals Online (AJOL)

    give the concerned persons their individual identity. It was also mentioned that other people may be attracted by the brown color of the mottled teeth. With respect to avoidance of fluorosis, 17(85%) and. 14(70%) of students with and without dental fluorosis respectively said they did not know how to prevent the problem and ...

  11. Genetics Home Reference: Dent disease

    Science.gov (United States)

    ... collapse boxes. Description Dent disease is a chronic kidney disorder that occurs almost exclusively in males. In affected ... because its features overlap with those of other kidney disorders. Related Information What information about a genetic condition ...

  12. Holographic superconductor in a deformed four-dimensional STU model

    Energy Technology Data Exchange (ETDEWEB)

    Pourhassan, B.; Bagheri-Mohagheghi, M.M. [Damghan University, School of Physics, Damghan (Iran, Islamic Republic of)

    2017-11-15

    In this paper, we consider a deformed STU model in four dimensions including both electric and magnetic charges. Using the AdS/CFT correspondence, we study holographic superconductors and obtain transport properties like electrical and thermal conductivities. We obtain transport properties in terms of the magnetic charge of the black hole and interpret it as the magnetic monopole of dual field theory. We find that the presence of the magnetic charge is necessary to have maximum conductivities, and the existence of a magnetic monopole with a critical charge (137 e) to reach the maximum superconductivity is important. Also, we show that the thermal conductivity increases with increasing of the magnetic charge. It may be concluded that the origin of superconductivity is the magnetic monopole. (orig.)

  13. [Dens in dente. Histological characteristics of an unusual case of dens in dente].

    Science.gov (United States)

    Macorra, J C; Pérez, J; Puertas, A J

    1989-03-01

    We describe a rare case of "dens in dente" in an accessory germ in central location of an anencephalic phoetus. Its characteristics of having enamel surrounding normal dentin and normal pulpar cavity, all of them surrounded by the unaffected accessory germ leads us to describe the term "dente in dente". Such alteration is not previously described.

  14. Steam generator tube denting simulation testing

    International Nuclear Information System (INIS)

    Battaglia, P.J.; Singley, W.J.

    1978-02-01

    Tube denting has been reported in steam generators in a number of commercial nuclear power plants in recent years. In order to aid in understanding of the mechanism leading to tube denting in the steam generators, a Bettis laboratory test program was initiated to attempt to reproduce tube denting and to investigate the effects of chemistry, design, and temperature. The results of the tests indicate that denting can be reproduced in the small model steam generator test apparatus devised for this testing. Denting was observed under carbon steel support plates in seawater-contaminated secondary water in a test with hydrazine-ammonia chemistry and a primary water inlet temperature of 590 0 F and in a test with hydrazine-morpholine chemistry and a primary water inlet temperature of 545 0 F. The parameters of these two tests simulate conditions in a typical commercial steam generator and the Shippingport Atomic Power Station steam generators, respectively

  15. Neurospora crassa ASM-1 complements the conidiation defect in a stuA mutant of Aspergillus nidulans.

    Science.gov (United States)

    Chung, Dawoon; Upadhyay, Srijana; Bomer, Brigitte; Wilkinson, Heather H; Ebbole, Daniel J; Shaw, Brian D

    2015-01-01

    Aspergillus nidulans StuA and Neurospora crassa ASM-1 are orthologous APSES (ASM-1, PHD1, SOK2, Efg1, StuA) transcription factors conserved across a diverse group of fungi. StuA and ASM-1 have roles in asexual (conidiation) and sexual (ascospore formation) development in both organisms. To address the hypothesis that the last common ancestor of these diverse fungi regulated conidiation with similar genes, asm-1 was introduced into the stuA1 mutant of A. nidulans. Expression of asm-1 complemented defective conidiophore morphology and restored conidia production to wild type levels in stuA1. Expression of asm-1 in the stuA1 strain did not rescue the defect in sexual development. When the conidiation regulator AbaA was tagged at its C-terminus with GFP in A. nidulans, it localized to nuclei in phialides. When expressed in the stuA1 mutant, AbaA::GFP localized to nuclei in conidiophores but no longer was confined to phialides, suggesting that expression of AbaA in specific cell types of the conidiophore was conditioned by StuA. Our data suggest that the function in conidiation of StuA and ASM-1 is conserved and support the view that, despite the great morphological and ontogenic diversity of their condiphores, the last common ancestor of A. nidulans and N. crassa produced an ortholog of StuA that was involved in conidiophore development. © 2015 by The Mycological Society of America.

  16. The lower bound violation of shear viscosity to entropy ratio due to logarithmic correction in STU model

    Energy Technology Data Exchange (ETDEWEB)

    Pourhassan, Behnam [Damghan University, School of Physics, Damghan (Iran, Islamic Republic of); Faizal, Mir [University of British Columbia-Okanagan, Irving K. Barber School of Arts and Sciences, Kelowna, BC (Canada); University of Lethbridge, Department of Physics and Astronomy, Lethbridge, AB (Canada)

    2017-02-15

    In this paper, we analyze the effects of thermal fluctuations on a STU black hole. We observe that these thermal fluctuations can affect the stability of a STU black hole. We will also analyze the effects of these thermal fluctuations on the thermodynamics of a STU black hole. Furthermore, in the Jacobson formalism such a modification will produce a deformation of the geometry of the STU black hole. Hence, we use the AdS/CFT correspondence to analyze the effect of such a deformation on the dual quark-gluon plasma. So, we explicitly analyze the effect of thermal fluctuations on the shear viscosity to entropy ratio in the quark-gluon plasma, and we analyze the effects of thermal fluctuations on this ratio. (orig.)

  17. GGC and StuI polymorphism on the androgen receptor gene in endometrial cancer patients

    International Nuclear Information System (INIS)

    Sasaki, Masahiro; Karube, Akihiro; Karube, Yuko; Watari, Michiko; Sakuragi, Noriaki; Fujimoto, Seiichiro; Dahiya, Rajvir

    2005-01-01

    Androgens have an anti-proliferative effect on endometrial cells. Human androgen receptor (AR) gene contains two polymorphic short tandem repeats of GGC and CAG, and a single-nucleotide polymorphism on exon 1 that is recognized by the restriction enzyme, StuI. Prior studies have shown that the lengths of the CAG repeat are inversely and linearly related to AR activity and associated with endometrial cancer. However, little is known about the GGC repeat and the StuI polymorphism of the AR gene. Thus, we investigated whether these AR polymorphisms are risk factors for endometrial cancer. To test this hypothesis, the genetic distributions of these polymorphisms were investigated in blood samples from endometrial cancer patients and healthy controls. The allelic and genotyping profiles were analyzed by polymerase chain reaction (PCR), PCR-restriction fragment length polymorphism (PCR-RFLP), and direct DNA sequencing, and analyzed statistically. The GGC repeat was significantly longer in endometrial cancer patients as compared to normal healthy controls. In general, an increased risk of endometrial cancer was found with increasing GGC repeat. The relative risk for the 17 GGC repeat was greater than 4, as compared to controls. However, the StuI polymorphism was not significantly different between patients and controls. The findings suggest that increased numbers of GGC repeat on the AR gene may be a risk factor for endometrial cancer

  18. Premolarized double dens in dente in albinism - A case report

    Directory of Open Access Journals (Sweden)

    Suprabha B

    2005-09-01

    Full Text Available Dens in dente are known to be associated with many dental abnormalities such as taurodontism microdontia, gemination, and dens evaginatus. This paper describes a rare case of double dens in dente in a lateral incisor with crown morphology similar to a premolar present in a patient with features of albinism. Problems associated with this condition and their management is discussed.

  19. Medicina Dentária minimamente invasiva

    OpenAIRE

    Franken, Monique Ananda

    2015-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária Introdução: Nos últimos anos, a doença cárie tem passado por uma análise criteriosa dos recursos terapêuticos a serem empregues, sendo discutida a adoção de uma prática mais conservadora e menos invasiva. Os materiais e as técnicas têm sido aperfeiçoados de modo a permitir o conforto do paciente e a preservação da estrutura ...

  20. FcStuA from Fusarium culmorum controls wheat foot and root rot in a toxin dispensable manner.

    Science.gov (United States)

    Pasquali, Matias; Spanu, Francesca; Scherm, Barbara; Balmas, Virgilio; Hoffmann, Lucien; Hammond-Kosack, Kim E; Beyer, Marco; Migheli, Quirico

    2013-01-01

    Fusarium culmorum is one of the most harmful pathogens of durum wheat and is the causal agent of foot and root rot (FRR) disease. F. culmorum produces the mycotoxin deoxynivalenol (DON) that is involved in the pathogenic process. The role of the gene FcStuA, a StuA ortholog protein with an APSES domain sharing 98.5% homology to the FgStuA protein (FGSG10129), was determined by functional characterisation of deletion mutants obtained from two F. culmorum wild-type strains, FcUk99 (a highly pathogenic DON producer) and Fc233B (unable to produce toxin and with a mild pathogenic behavior). The ΔFcStuA mutants originating from both strains showed common phenotypic characters including stunted vegetative growth, loss of hydrophobicity of the mycelium, altered pigmentation, decreased activity of polygalacturonic enzymes and catalases, altered and reduced conidiation, delayed conidial germination patterns and complete loss of pathogenicity towards wheat stem base/root tissue. Glycolytic process efficiency [measured as growth on glucose as sole carbon (C) source] was strongly impaired and growth was partially restored on glutamic acid. Growth on pectin-like sources ranked in between glucose and glutamic acid with the following order (the lowest to the highest growth): beechwood xylan, sugarbeet arabinan, polygalacturonic acid, citrus pectin, apple pectin, potato azogalactan. DON production in the mutants originating from FcUK99 strain was significantly decreased (-95%) in vitro. Moreover, both sets of mutants were unable to colonise non-cereal plant tissues, i.e. apple and tomato fruits and potato tubers. No differences between mutants, ectopic and wild-type strains were observed concerning the level of resistance towards four fungicides belonging to three classes, the demethylase inhibitors epoxiconazole and tebuconzole, the succinate dehydrogenase inhibitor isopyrazam and the cytochrome bc1 inhibitor trifloxystrobin. StuA, given its multiple functions in cell regulation

  1. Nine years of DentEd--a global perspective on dental education.

    Science.gov (United States)

    Reynolds, P A; Eaton, K A; Paganelli, C; Shanley, D

    2008-08-23

    This paper describes the three successive and successful DentEd projects, funded by the European Union, that established a productive thematic network which identified common content within the dental curriculum. It then developed an agreed professional profile, with a defined set of competences and a modular curriculum for all new dental graduates based on the European Credit Transfer System and trends in learning and assessment. The three phases took nine years to complete. Phase one investigated all aspects of dental undergraduate education and included over 30 visits to different dental schools by teams of dental educators. Phase two built on this work and included further visits to dental schools. Phase three refined the competency framework that had been developed in phase two and culminated in a global dental conference which finalised position papers on all aspects of dental education. The work and recommendations of the ICT in dental education group are considered in detail in the paper. The projects provided the stimulus for a number of European and international collaborations, including the web-based International Federation of Dental Education and Associations (IFDEA) Knowledge Centre and the International Virtual Dental School (IVIDENT), both of which aim to make increasingly sophisticated ICT-based educational material available worldwide and to promote international understanding.

  2. FcStuA from Fusarium culmorum controls wheat foot and root rot in a toxin dispensable manner.

    Directory of Open Access Journals (Sweden)

    Matias Pasquali

    Full Text Available Fusarium culmorum is one of the most harmful pathogens of durum wheat and is the causal agent of foot and root rot (FRR disease. F. culmorum produces the mycotoxin deoxynivalenol (DON that is involved in the pathogenic process. The role of the gene FcStuA, a StuA ortholog protein with an APSES domain sharing 98.5% homology to the FgStuA protein (FGSG10129, was determined by functional characterisation of deletion mutants obtained from two F. culmorum wild-type strains, FcUk99 (a highly pathogenic DON producer and Fc233B (unable to produce toxin and with a mild pathogenic behavior. The ΔFcStuA mutants originating from both strains showed common phenotypic characters including stunted vegetative growth, loss of hydrophobicity of the mycelium, altered pigmentation, decreased activity of polygalacturonic enzymes and catalases, altered and reduced conidiation, delayed conidial germination patterns and complete loss of pathogenicity towards wheat stem base/root tissue. Glycolytic process efficiency [measured as growth on glucose as sole carbon (C source] was strongly impaired and growth was partially restored on glutamic acid. Growth on pectin-like sources ranked in between glucose and glutamic acid with the following order (the lowest to the highest growth: beechwood xylan, sugarbeet arabinan, polygalacturonic acid, citrus pectin, apple pectin, potato azogalactan. DON production in the mutants originating from FcUK99 strain was significantly decreased (-95% in vitro. Moreover, both sets of mutants were unable to colonise non-cereal plant tissues, i.e. apple and tomato fruits and potato tubers. No differences between mutants, ectopic and wild-type strains were observed concerning the level of resistance towards four fungicides belonging to three classes, the demethylase inhibitors epoxiconazole and tebuconzole, the succinate dehydrogenase inhibitor isopyrazam and the cytochrome bc1 inhibitor trifloxystrobin. StuA, given its multiple functions in cell

  3. FcStuA from Fusarium culmorum Controls Wheat Foot and Root Rot in a Toxin Dispensable Manner

    Science.gov (United States)

    Scherm, Barbara; Balmas, Virgilio; Hoffmann, Lucien; Hammond-Kosack, Kim E.; Beyer, Marco; Migheli, Quirico

    2013-01-01

    Fusarium culmorum is one of the most harmful pathogens of durum wheat and is the causal agent of foot and root rot (FRR) disease. F. culmorum produces the mycotoxin deoxynivalenol (DON) that is involved in the pathogenic process. The role of the gene FcStuA, a StuA ortholog protein with an APSES domain sharing 98.5% homology to the FgStuA protein (FGSG10129), was determined by functional characterisation of deletion mutants obtained from two F. culmorum wild-type strains, FcUk99 (a highly pathogenic DON producer) and Fc233B (unable to produce toxin and with a mild pathogenic behavior). The ΔFcStuA mutants originating from both strains showed common phenotypic characters including stunted vegetative growth, loss of hydrophobicity of the mycelium, altered pigmentation, decreased activity of polygalacturonic enzymes and catalases, altered and reduced conidiation, delayed conidial germination patterns and complete loss of pathogenicity towards wheat stem base/root tissue. Glycolytic process efficiency [measured as growth on glucose as sole carbon (C) source] was strongly impaired and growth was partially restored on glutamic acid. Growth on pectin-like sources ranked in between glucose and glutamic acid with the following order (the lowest to the highest growth): beechwood xylan, sugarbeet arabinan, polygalacturonic acid, citrus pectin, apple pectin, potato azogalactan. DON production in the mutants originating from FcUK99 strain was significantly decreased (−95%) in vitro. Moreover, both sets of mutants were unable to colonise non-cereal plant tissues, i.e. apple and tomato fruits and potato tubers. No differences between mutants, ectopic and wild-type strains were observed concerning the level of resistance towards four fungicides belonging to three classes, the demethylase inhibitors epoxiconazole and tebuconzole, the succinate dehydrogenase inhibitor isopyrazam and the cytochrome bc1 inhibitor trifloxystrobin. StuA, given its multiple functions in cell

  4. Cisto dentígero: modalidades de tratamento

    Directory of Open Access Journals (Sweden)

    Rubens Caliento

    Full Text Available INTRODUÇÃO: O cisto dentígero é o segundo cisto odontogênico mais frequente nos maxilares. É uma lesão benigna, derivada do epitélio odontogênico da coroa de um dente não erupcionado, porém de etiopatogenia incerta. São geralmente radiotransparentes e, mais comumente, uniloculares. Estas lesões são observadas em exames de rotina ou quando não ocorre o irrompimento de um dente permanente. Os terceiros molares inferiores e os caninos superiores são os dentes mais acometidos, sendo também alta a ocorrência desta lesão em dentes supranumerários e associados a odontomas. O cisto dentígero ocorre principalmente nas três primeiras décadas de vida, tendo um crescimento lento e assintomático; pode atingir dimensões consideráveis, causando deformidade facial, impactação e deslocamento de dentes e/ou estruturas adjacentes. OBJETIVO: Definição das técnicas de marsupialização e enucleação, bem como consideração de critérios objetivos importantes para o plano de tratamento, como tamanho do cisto, idade, proximidade com estruturas anatômicas e importância clínica do dente envolvido. Apesar das peculiaridades clínicas de cada caso e do método de tratamento escolhido, o prognóstico destas lesões é favorável, quando se emprega apropriada terapêutica. MATERIAL E MÉTODO: O presente estudo apresentará um relato de caso tratado através da manobra de descompressão seguida de enucleação, bem como uma discussão acerca das modalidades de tratamento. RESULTADO: O paciente encontra-se em pós-operatório de dois anos sem sinais de recidiva da lesão e ausência de parestesias em face. CONCLUSÃO: A técnica empregada preservou a função neurossensorial e mostrou-se eficiente para a cura da lesão.

  5. Filtering algorithm for radial displacement measurements of a dented pipe

    International Nuclear Information System (INIS)

    Hojjati, M.H.; Lukasiewicz, S.A.

    2008-01-01

    Experimental measurements are always affected by some noise and errors caused by inherent inaccuracies and deficiencies of the experimental techniques and measuring devices used. In some fields, such as strain calculations in a dented pipe, the results are very sensitive to the errors. This paper presents a filtering algorithm to remove noise and errors from experimental measurements of radial displacements of a dented pipe. The proposed filter eliminates the errors without harming the measured data. The filtered data can then be used to estimate membrane and bending strains. The method is very effective and easy to use and provides a helpful practical measure for inspection purposes

  6. Repair of dents subjected to cyclic pressure service using composite materials

    Energy Technology Data Exchange (ETDEWEB)

    Alexander, Chris; Bedoya, Julian [Stress Engineering Services, Inc., Houston, Texas (United States)], email: chris.alexander@stress.com, email: julian.bedoya@stress.com

    2010-07-01

    For many years, corrosion has been repaired with composite materials in high-pressure gas and liquid pipelines. In the past few years, efforts have been devoted to assess the effectiveness of composite materials for other types of defects. The purpose of this paper is to evaluate the level of reinforcement they provide in repairing dents. The Pipeline Research Council International and six manufacturers sponsored a program to test eight different repair systems, also using a set of unrepaired dent samples as a reference data set. Different dent configurations were fabricated (plain dents, dents in girth welds, dents in ERW seams); all dents were 15% deep. Samples were pressure-cycled to failure to determine how much the composite materials extended their life. Details are given on how dents were fabricated and how samples were tested. Results clearly show that composite repair systems have great potential to restore the integrity of damaged pipelines.

  7. Quiste dentígero en niños

    Directory of Open Access Journals (Sweden)

    Fernanda Astrogilda de Sousa Feitosa

    2016-01-01

    Full Text Available Introducción: El quiste dentígero es el segundo tipo de quistes odontogénicos más frecuentes de los maxilares, desarrollándose a partir de alteraciones del epitelio del órgano del esmalte, donde ocurre una acumulación de líquido entre el epitelio y el esmalte. Por lo general está relacionado a la corona de un diente no erupcionado. Objetivos: el objetivo de este estudio fue analizar los aspectos de diagnóstico y tratamiento de los quistes dentígero en pacientes pediátricos. Métodos: se realizó una búsqueda de artículos científicos indexados en la base de datos bibliográficos PUBMED® en el período comprendido entre febrero y marzo de 2015, mediante el descriptor "dentigerous cyst". Resultados: Se encontraron 147 artículos publicados en los últimos 10 años. Todos los artículos que trataban sobre quiste dentígero en niños fueron incluidos en este estudio. La literatura revisada destaca puntos importantes sobre la epidemiología, manejo y tratamiento de quiste dentígero en pacientes pediátricos. Conclusión: De los artículos revisados se puede concluir que el quiste dentígero es más frecuente en los niños del género masculino y con una edad media de 10 años. Afecta principalmente a la mandíbula y tanto la enucleación como la marsupialización están indicados para el tratamiento de quistes

  8. Próteses dentárias

    OpenAIRE

    Lopes, Marco Filipe Andrez Rodrigues

    2014-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária A Medicina Dentária tem a seu cargo e como objetivo principal a manutenção e garantia de uma melhor vida oral dos seus pacientes. Assim a preocupação do profissional passa pela prevenção de doenças do mesmo foro, o alívio da dor provocada por um episódio, a garantia da competência e capacidade mastigatória, possibilitar que seja ultr...

  9. THE PREVENTION, ERADICATION, MISUSE, AND ILLICIT NAR-COTICS CIRCULATION SOCIALIZATION PROGRAM FOR STU-DENTS IN BANDUNG CITY (SOSIALISASI PROGRAM PENCEGAHAN, PEMBERANTAS, PENYALAHGUNAAN, DAN PEREDARAN GELAP NARKOTIKA BAGI PELAJAR DI KOTA BANDUNG

    Directory of Open Access Journals (Sweden)

    arkita Vierza Bella

    2018-02-01

    Full Text Available Abstract. The Prevention, Eradication, Misuse, and Illicit Narcotics Circulation Socializa-tion Program was a program held by the Indonesia’s National Narcotics Agency (BNN of West Java Province to grow a sense against narcotics and to create a narcotics-free environment. Alt-hough this program has been implemented, the use of narcotics continues to increase every year, especially among students. This research aimed to discover the correlations between the Preven-tion, Eradication, Misuse, and Illicit Narcotics Circulation socialization program from Indone-sia’s National Narcotics Agency (BNN of West Java Province in terms of the socialization mes-sage, the credibility of the instructor, and the socialization method with the students’ attitude in Bandung against the danger of narcotics. This research used the correlational method through Rank Spearman (rs hypothesis test with the descriptive and inferential analysis technique. The result of this research showed that there is a strong relation between the Prevention, Eradication, Misuse, and Illicit Narcotics Circulation (P4GN socialization program from Indonesia’s National Narcotics Agency (BNN of West Java Province and the students’ attitude in Bandung against the danger of narcotics. Abstrak. Sosialisasi Program Pencegahan, Pemberantasan, Penyalahgunaan, dan Peredaran Gelap Narkotika (P4GN merupakan sosialisasi yang dilakukan oleh Badan Nasional Narkotika Provinsi Jawa Barat guna menumbuhkan sikap menolak narkoba dan menciptakan ling-kungan bebas narkoba, walaupun sosialisasi ini telah dilakukan tetapi penggunaan narkotika terus saja meningkat setiap tahunnya khususnya di kalangan pelajar. Penelitian ini bertujuan untuk mengetahui hubungan antara sosialisasi program Pencegahan, Pemberantasan, Penyalahgunaan, dan Peredaran Gelap Narkotika (P4GN Badan Nasional Narkotika Provinsi Jawa Barat dilihat dari segi pesan penyuluhan, kredibilitas penyuluh, dan metode penyuluhan dengan sikap pelajar di Ko-ta Bandung terhadap bahaya narkotika. Metode yang digunakan adalah metode korelasional, me-lalui uji hipotesis Rank Spearman (rs dengan teknik analisis deskriptif dan inferensial. Hasil penelitian menunjukkan bahwa adanya hubungan yang kuat antara sosialisasi program Pencega-han, Pemberantasan, Penyalahgunaan, dan Peredaran Gelap Narkotika (P4GN Badan Nasional Narkotika Provinsi Jawa Barat dengan sikap pelajar di Kota Bandung terhadap bahaya narkotika.

  10. Bullet dents – “Proof marks” or battle damage

    Directory of Open Access Journals (Sweden)

    Williams, Alan

    2006-12-01

    Full Text Available

    It is well known that the breastplates of many armours from the later 16th century and the 17th century bear the hemispherical dents generally known as proof marks. It has been taken as axiomatic that these marks were made in order to demonstrate the armours’ effectiveness against firearms. If however some of these dents are compared with dents which are the result of battle damage, it appears that they were made by energy levels of a different order of magnitude, and offer little guarantee as to the “proof” of the armour.



    Como es bien sabido, muchos petos de armaduras de finales del siglo XVI y del XVII tienen abolladuras semiesféricas conocidas como pruebas de arcabuz. Se ha considerado axiomático que estas abolladuras fueron hechas para demostrar la efectividad de las armaduras frente a las armas de fuego. Sin embargo, si se comparan con otras debidas a daños en combate, parece que fueron producidas por energías de diferente orden o magnitud, al tiempo que ofrecen pocas garantías como “pruebas” de las armaduras.

  11. Toxicodependência e a Medicina Dentária

    OpenAIRE

    Pereira, Maria Cecília Paredes

    2016-01-01

    Introdução: com o aumento da toxicodependência, que engloba um problema mundial, também cresce o número de doentes com suas devidas consequências, que são patologias sistémicas, englobando a saúde oral, que é uma das partes do corpo que mais sofre com a toxicodependência. Objetivos: Esta tese tem como objetivo a revisão da literatura sobre “toxicodependência” e “medicina dentária”, correlacionando estes temas com patologias e complicações na cavidade oral, nomeadamente, brux...

  12. Postmodernisma iezīmes Andželas Kārteres stāstu izlasē "Asiņainais kambaris"

    OpenAIRE

    Mierkalne, Laura

    2016-01-01

    Šajā pētījumā aplūkotas postmodernisma iezīmes Andželas Kārteres stāstu izlasē Asiņainais kambaris. Padziļināti tiek apskatīta intertekstualitāte, stilizācija, un fragmentācija, un to izpausmes, lai secinātu kā šīs iezīmes veido postmodernisma stāstu. Šis pētījums izstrādāts veicot ar postmodernisma tēmu saistīto teorētisko materiālu un A.Kārteres stāstu analīzi. Pētījuma aktualitāti ietekmē, pirmkārt, postmodernisma literatūras problemātika – sarežģītā literatūras perioda definīcijas izstrād...

  13. Aumento de coroa clínica em dentes anteriores

    Directory of Open Access Journals (Sweden)

    Ragede Siqueira Trevisani

    2015-11-01

    Full Text Available Atualmente, a estética periodontal ou estética vermelha, tem sido muito discutida e valorizada em busca da harmonia do sorriso. Em situações de erupção passiva alterada, ou seja, existência de grande exposição de gengiva acompanhada de coroas clínicas curtas, há indicação precisa para a execução de aumento de coroa clínica: tratamento do sorriso gengival através de cirurgia periodontal. Este trabalho tem como objetivo relatar um caso clínico de sorriso gengival causado pela erupção passiva incompleta. Inicialmente foi realizado um enceramento diagnóstico e confecção de um mock-up, para que esse procedimento permita a visualização dos resultados que serão alcançados com a correção do sorriso gengival. Após a apresentação do estudo para a paciente e consentimento do tratamento, foi realizada a cirurgia periodontal de aumento de coroa clínica, através da técnica sem elevação de retalho (flapless, minimamente invasiva. O resultado esperado, após o tratamento cirúrgico, foi a mudança da dimensão dos dentes anteriores e otimização dos resultados estéticos com novas restaurações coronárias com uma melhor harmonia entre dente e gengiva, proporcionando uma estética satisfatória no sorriso e preservando o espaço biológico.

  14. Fulltext PDF

    Indian Academy of Sciences (India)

    Admin

    2012-09-07

    Sep 7, 2012 ... tel accommodation and excellent academic atmosphere to stu- dents even at the undergraduate level. It is just that we need to persuade bright minds to consider science as a career as it can give immense intellectual satisfaction to them and is good for the country. This is the Graeco–Latin square based on.

  15. Experimental evaluation of residual stresses produced by plain dents in pipelines

    Energy Technology Data Exchange (ETDEWEB)

    Pascotto, Jorge [PETROBRAS Transporte S.A. (TRANSPETRO), Rio de Janeiro, RJ (Brazil); Marques, Altino; Fonseca, Maria Cindra [Universidade Federal Fluminense (UFF), Niteroi, RJ (Brazil)

    2009-07-01

    A dent means a permanent plastic deformation of the circular cross-section of the pipe. Dents are potentially danger for structural integrity of onshore and offshore pipelines, because it causes a local stress and strain concentration. It is also expected that residual stresses are introduced by the non-uniform plastic deformation. A plain dent is a dent which causes a smooth change in the curvature of the pipe wall that contains no wall thickness reductions (such as a gouge or a crack) or other defects or imperfections (such as a weld). This work presents an experimental evaluation of residual stresses intensification due to plain dents introduced through the same indentation process, in samples made of the same steel line pipe, commonly used in the pipeline industry. The residual stresses were measured in the longitudinal and circumferential directions in preselected points by X-ray diffraction technique, before indentation. After the samples have been dented, the residual stresses were measured once more at the same points, for comparison. All samples presented a similar behavior of the residual stresses due to induced plain dents, and the X-ray diffraction technique shows itself as an efficient methodology of stress measurement in pipelines. (author)

  16. Plastic collapse of API 5L X65 pipe having dent defects under internal pressure and bending load

    Energy Technology Data Exchange (ETDEWEB)

    Baek, Jong-hyun; Kim, Young-pyo; Kim, Cheol-man; Kim, Woo-sik [RandD Division, KOGAS, Ansan, (Korea, Republic of); Koo, Jae-mean; Seok, Chang-sung [Department of Mechanical Engineering, Sungkyunkwan University, Suwon, (Korea, Republic of)

    2010-07-01

    This paper studies the effect of the dent magnitude on the collapse of a dented pipe that is subjected to simultaneous internal pressure and in-plane bending. The evaluation was made with elastic-plastic finite element analyses. Dents of various depths were made on a pipe having a diameter of 762 mm and a wall thickness of 17.5 mm. The dented pipes were subjected to a closing or opening in-plane bending moment under various internal pressures. Results showed that the bending mode and the dent geometry had a strong influence on the plastic collapse behaviour. Moment-bending angle curves obtained from computer simulation were evaluated with a variety of factors. A dent whose depth was 5% of the outer diameter did not reduce the load-carrying capacity of a pipe. The load-carrying capacity was higher with an opening bending mode than with a closing bending mode regardless of dent depth.

  17. Abordagem terapêutica de dentes permanentes com manchas e pigmentações em odontopediatria

    OpenAIRE

    Cabrita, Gisela Monteiro

    2012-01-01

    Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2012 A preocupação com a aparência dentária é cada vez mais importante e começa em idades cada vez mais precoce. As alterações da cor dentária são classificadas em intrínsecas e extrínsecas e o seu tratamento varia consoante a sua localização. As pigmentações extrínsecas devem ser removidas através de uma técnica de escovagem adequada e limpeza ultrassónica e profiláctica com pedra-pomes, enquanto ...

  18. Traumatismo dentário em dentição permanente jovem

    OpenAIRE

    Cardoso, Raquel Filipa Francisco

    2014-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária Introdução: Estudos epidemiológicos indicam que o traumatismo dentário é um problema significativo em jovens 8-15 anos e que a sua incidência em determinadas faixas etárias pode ultrapassa o da cárie dentária e da doença periodontal. Deste modo, o traumatismo dentário é sinónimo de um problema de saude pública em que o seu aumento se...

  19. Classificação morfofuncional dos dentes de quati, Nasua nasua

    Directory of Open Access Journals (Sweden)

    Naira C.G Pieri

    2011-05-01

    Full Text Available O quati (Nasua nasua, é um mamífero onívoro, amplamente distribuído pela América do sul e encontrado em todo Brasil. A evolução provocou nos dentes dos mamíferos múltiplas variações, adequando às mais diversas dietas. Por essas variações nos dentes é possível classificar os vertebrados em ordem, gênero e família. Portanto este trabalho teve como objetivo descrever e classificar morfologicamente os dentes de machos e fêmeas de N. nausa, a fim de classificá-los e compará-los entre si e com a morfologia dos dentes de Canis familiaris descrita na literatura. Neste estudo foram utilizados cinco animais Nasua nasua, adultos, de ambos os sexos, cedidas pelo Criatório Cientifico Cecrimpas (Unifeob. Dois deles macerados tiveram a cavidade oral exposta para a realização da documentação fotográfica da posição dos dentes, outros três, os dentes foram submetidos à descalcificação e processamento e embebição em parafina para observação histológica. Na cavidade oral de N. nasua, devido ao dimorfismo sexual, foi possível comparar a dentição do macho e da fêmea macroscopicamente. A fêmea apresentou dentes menores, caninos arredondados e o macho, caninos maiores. Os animais apresentaram a fórmula dentária 2x(I3/3, C1/1, P4/4, M2/2 (I=incisivos, C=caninos, P=pré-molares e M=molares = 40. Microscopicamente todos os dentes foram classificados como braquidontes, pois o esmalte é depositado sobre a dentina. Este tipo de dente não tem erupção constante como o hipsodonte, pois seu esmalte permanece intacto até a época de erupção. Seus dentes também foram classificados como anelodontes, por ter um período limitado de características de crescimento.

  20. A systematic approach for evaluating dent severity in a liquid transmission pipeline system

    Energy Technology Data Exchange (ETDEWEB)

    Alexander, Chris [Stress Engineering Services, Inc., Houston, Texas (United States)], email: chris.alexander@stress.com; Jorritsma, Eelco [Shell Pipeline Company, Houston, Texas (United States)], email: eelco.jorritsma@shell.com

    2010-07-01

    An API 579 Level 3 assessment was performed on a 2% dent in a 20-inch pipeline to determine the stress concentration factor (SCF) in the dent. An in-line inspection caliper run provided the geometry data on which a finite element model was applied. Also, a plain dent was subjected to cyclic pressure that was similar to the dent in question, in order to evaluate the same data through an experimental study. The experimental fatigue life, combined with the mean fatigue curve, gave a 4.20 SCF factor, which is within 1% of the calculated FEA-based SCF and confirms the validity of the SCF. The authors used the pressure data provided by the operator for a 12-month period to perform a rainflow count analysis and conservatively estimated the remaining life to be 65 years for the dent in question. They intend to offer a systemic approach using caliper and operating pressure history data to evaluate the severity of a dent.

  1. Probe for detection of denting in PWR steam generator tubes

    International Nuclear Information System (INIS)

    Gerardin, J.P.; Germain, J.L.; Nio, J.C.

    1994-07-01

    In certain types of PWR steam generator, oxide deposits can lead to embedding, and subsequently to deformation of a tube (the phenomenon of ''denting''). Such embedding changes the vibratory behavior of the tubes and can result in fatigue cracking. This type of cracking can also be worsened in the event of improper assembly of the anti-vibration spacer bars supporting the U-bends. To prevent such incidents and provide for effective preventive condition-directed maintenance of its PWR steam generators, EDF has undertaken the study and development of a probe to detect this type of phenomenon. The studies began in 1990 and led to the building of an initial prototype probe. The principle behind the probe consists in inducing vibration in the U-bend and determining the main resonance modes of the tube. Measurements of frequency and amplitude and calculation of damping enable characterization of the mechanical behavior of the U-bend. The most important parameter is damping, for which the value must be sufficiently high to ensure that the tube is not subjected to major vibratory amplitudes during operation. Numerous tests have been performed with the first prototype version of the probe, on a mock-up in the test area and on one of the demounted steam generators on the Dampierre site. These different tests have enabled validation of the operating principle, fine-tuning the process, pinpointing certain mechanical problems in the probe design, and obtaining the first indications as to the real vibratory behavior of U-bends on a steam generator. On the basis of these preliminary tests, the specifications were drawn up for an industrial version of the probe. Following a call for bids and the choice of a manufacturer, work began on fabrication of a new probe model in 1993. This version was delivered at the end of 1993 and testing began in 1994. (authors). 5 figs., 2 tabs

  2. Restaurações estéticas e funcionais de dentes anteriores decíduos

    OpenAIRE

    Rocha, Marta de Mendonça

    2017-01-01

    Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2017 Introdução: A manutenção da dentição decídua é importante para o bem-estar geral da criança. A cárie dentária, as pigmentações, os traumatismos, a perda precoce de dentes, os maus posicionamentos dentários ou qualquer outra anomalia de forma e tamanho dos dentes, podem contribuir para uma estética insatisfatória. Os problemas estéticos em odontopediatria podem ser solucionados de diferentes fo...

  3. Undergraduate Convexity

    DEFF Research Database (Denmark)

    Lauritzen, Niels

    Based on undergraduate teaching to students in computer science, economics and mathematics at Aarhus University, this is an elementary introduction to convex sets and convex functions with emphasis on concrete computations and examples. Starting from linear inequalities and Fourier-Motzkin elimin...

  4. Exposição a fluoretos com origem na pasta dentífrica em crianças em idade pré-escolar

    OpenAIRE

    Magalhães, Helena Sofia Pires

    2012-01-01

    Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2012 Os potenciais riscos do uso dos fluoretos, nomeadamente o desenvolvimento de fluorose dentária, assim como os seus benefícios no controlo do desenvolvimento da cárie dentária são já conhecidos. Segundo a Direcção-Geral da Saúde, a escovagem dos dentes das crianças com uma pasta fluoretada, desde o aparecimento do seu primeiro dente, é essencial para a sua saúde oral. Pretende-se, neste trabalh...

  5. Anomalias dentárias de número em pacientes ortodônticos

    OpenAIRE

    Torres,Priscila Ferreira; Simplício,Alexandre Henrique de Melo; Luz,Allana Rodrigues César Araújo; Lima,Marina de Deus Moura de; Moura,Lúcia de Fátima Almeida de Deus; Moura,Marcoeli Silva de

    2015-01-01

    ResumoIntroduçãoA prevalência e a distribuição das anomalias dentárias de número variam de acordo com a população estudada.ObjetivoDeterminar a prevalência de anomalias dentárias de número, verificando-se a frequência com relação a gênero, localização e dentes mais acometidos.MétodoForam avaliadas 1.054 radiografias panorâmicas de pacientes com idade entre 5 e 30 anos, realizadas no período de janeiro a março de 2010, em uma clínica particular de diagnóstico por imagem de Teresina-PI. Foram r...

  6. Anomalias dentárias em crianças com fissura palatina ou labial

    OpenAIRE

    Lavoura, Filipa Sofia Santos

    2013-01-01

    As anomalias dentárias podem ocorrer como resultado de fatores genéticos e ambientais. Estas são geralmente causadas por defeitos em genes específicos, no entanto, eventos pré e pós-natais têm também sido implicados em diferentes tipos de anomalias dentárias. Quando comparados com a população geral, os indivíduos que apresentam fenda labial (FL) e fenda palatina (FP) demonstraram ter uma maior prevalência de anomalias dentárias, tais como variações de número, posição e taman...

  7. Comparative study of dlc coatings by pvd against cvd technique on textile dents

    International Nuclear Information System (INIS)

    Malik, M.; Alam, S.; Iftikhar, F.

    2007-01-01

    Diamond like Carbon (DLC) film is a hard amorphous carbon hydride film formed by Physical or Chemical vapor deposition (PVD or CVD) techniques. Due to its unique properties especially high hardness, lower coefficient of friction and lubricious nature, these coatings are not only used to extend the life of cutting tools but also for non cutting applications such as for forming dies, molds and on many functional parts of textile. In the present work two techniques were employed i.e. PVD and CVD for deposition of diamond like carbon film on textile dents. These dents are used as thread guider in high speed weaving machine. The measurement of coating thickness, adhesion, hardness and roughness values indicates that overall properties of DLC coating developed by PVD LARC technology reduces abrasion and increases the workability and durability of textile dents as well as suppress the need of lubricants. (author)

  8. Desenvolvimento de um sensor de determinação da vitalidade dentária

    OpenAIRE

    Cerqueira, Mariana Gomes

    2013-01-01

    Apesar da diferente morfologia, os dentes partilham uma estrutura fisiológica semelhante. Todos apresentam coroa, raíz e uma cavidade pulpar no interior da qual se encontra um tecido condutor altamente vascularizado e inervado – a polpa dentária. Existem diversos factores que ameaçam a vitalidade pulpar, provocando numa primeira fase a inflamação da polpa — pulpite — e numa fase posterior a sua morte — necrose. Neste contexto, esta tese de mestrado tem por objetivo desen...

  9. Conservative Management of Type III Dens in Dente Using Cone Beam Computed Tomography

    Directory of Open Access Journals (Sweden)

    K Pradeep

    2012-01-01

    Full Text Available Dens in dente, also known as dens invaginatus, dilated composite odontoma, or deep foramen caecum, is a developmental malformation that usually affects maxillary incisor teeth, particularly lateral incisors. It may occur in teeth anywhere within the jaws, other locations are comparatively rare. It can occur within both the crown and the root, although crown invaginations are more common. The use of cone beam computed tomography (CBCT is very helpful in endodontic diagnosis of complex anatomic variations. In this case we demonstrate the use of CBCT in the evaluation and endodontic management of a Type III dens in dente (Oehler′s Type III.

  10. Estudo do processo de difusão em resinas dentárias

    OpenAIRE

    Ana Elisa Lavezo

    2010-01-01

    Resumo: Atualmente os fabricantes de resinas odontológicas visam obter uma resina que possa associar maior durabilidade, com uma efetiva ligação dentina-resina. As resinas dentárias podem absorver água e produtos químicos do ambiente, além de liberar componentes para os ambientes circunvizinhos. A intrusão de água no material dentário pode ocasionar deterioração das propriedades físico-mecânicas, diminuindo assim a vida da resina. Assim ambas, a sorção e a solubilidade de meio podem resultar ...

  11. Estudo da morfologia dentária de Xenorhinotherium bahiense Cartelle & Lessa, 1988 (Mammalia, Litopterna, Macraucheniidae)

    OpenAIRE

    Lobo, Leonardo Souza

    2015-01-01

    A variação da dentição dos mamíferos permite obter informações sobre idade, dieta e relações de parentesco. Além disso, os dentes são constituídos por tecidos altamente resistentes que, por consequência, provêm abundante representatividade no registro fossilífero. Esses fatos tornam o estudo da morfologia dentária importante para o entendimento da taxonomia e evolução do grupo, especialmente em grupos extintos. Xenorhinotherium bahiense Cartelle & Lessa, 1988 é um membro da família Macrauchen...

  12. Undergraduate Convexity

    DEFF Research Database (Denmark)

    Lauritzen, Niels

    Based on undergraduate teaching to students in computer science, economics and mathematics at Aarhus University, this is an elementary introduction to convex sets and convex functions with emphasis on concrete computations and examples. Starting from linear inequalities and Fourier-Motzkin elimin......Based on undergraduate teaching to students in computer science, economics and mathematics at Aarhus University, this is an elementary introduction to convex sets and convex functions with emphasis on concrete computations and examples. Starting from linear inequalities and Fourier......-Motzkin elimination, the theory is developed by introducing polyhedra, the double description method and the simplex algorithm, closed convex subsets, convex functions of one and several variables ending with a chapter on convex optimization with the Karush-Kuhn-Tucker conditions, duality and an interior point...... algorithm....

  13. Residual dent in locally loaded foam core sandwich structures – Analysis and use for NDI

    NARCIS (Netherlands)

    Koysin, V.; Shipsha, Andrey

    2008-01-01

    This paper addresses the residual denting in the face sheet and corresponding core damage in a locally loaded flat sandwich structure with foam core. The problem is analytically considered in the context of elastic bending of the face sheet accompanied by non-linear deformation of the crushed foam

  14. Hard sludge and denting in the secondary side of PWR steam generators

    International Nuclear Information System (INIS)

    Fernández-Saavedra, R.; Fernández-Díaz, M.; Gómez-Mancebo, M.B.; Quejido-Cabezas, A.J.; Diego, G. de; Gómez-Briceño, D.

    2014-01-01

    The gradual corrosion of PWR (Pressurized Water Reactor) feedwater, condensate and drain systems results in the inevitably liberation and transport of corrosion products. In addition, other contaminants and impurities are introduced with the makeup water, auxiliary feedwater and by condenser leaks. All these compounds can eventually be incorporated into the secondary side of the steam generators (SGs) and transformed into deposits on the SG surfaces, causing the degradation of the thermal performance of the plant and lowering its achievable electrical output. These deposits are found as scale on tube surfaces, blockages in tube support flow passages and sludge piles on the tube sheet and the tube support plate crevices. Among all these deposits, sludge piles consolidating and hardening on the tube sheet and the tube support plate crevices are especially detrimental due to tube deformation or denting that can promote stress corrosion cracking (SCC). Hard sludge accumulation on the tube sheet, tube denting and some SCC have been found in Spanish nuclear power plants with Siemens KWU 61W/D3 steam generators. In this work, we purpose a model for the tube denting production as consequence of the consolidation and hardening of the sludge piles accumulated on the tube sheet of the steam generator throughout data obtained from the more recent operating cycles of these plants i.e., chemical characterization of the sludge and denting evolution. (author)

  15. Placa bacteriana dentária em cães Dental bacterial plaque in dogs

    Directory of Open Access Journals (Sweden)

    Duvaldo Eurides

    1996-12-01

    Full Text Available Com objetivo de avaliar a incidência de placa bacteriana dentária, foram utilizados 30 cães, sem raça definida, distribuídos em três grupos iguais, de acordo com a faixa etária, sendo o grupo I de 0 a 2 anos, o grupo II de 3 a 5 anos e o grupo III acima de 6 anos. Os animais foram submetidos a anestesia geral e sobre os dentes foi aplicado cloreto de metilrosanilina, para evidenciar acúmulos bacterianos. As placas encontravam-se distribuídas em 80,99% no grupo I, 71,45% no grupo II e 83,96% no grupo III. Os grupos dentários foram considerados separadamente, apresentando índices de 64,84% nos dentes incisivos, 84,80% nos caninos, 87,23% nos pré-molares e 78,34% nos molares. Nos três grupos de cães observou-se índices semelhantes de placa bacteriana nos diferentes grupos dentários. Os animais do grupo II e o grupo de dentes incisivos apresentaram menores índices de placa bacteriana.To avaliate the incidence of bacterial plaque 30 mogreal dogs were utilizated, distributed among three equal groups. According to age, group I was composed of 0 to 2 years-old dogs, group II was 3 to 5 years-old, and group III over 6 years-old. The animals underwent a general anesthesia and metilrosanilin cloret was applied over the tooth, to evidence the bacterial mass. The plaques were distributed to 80.99% in group I, 71.42% in group II and 83.96% in group III. The dental groups were considerated apart, showing index of 64.84% on the incisar tooth, 84.80% on the canine tooth, 87.23% on the premolar tooth, and 78.34% on the molar tooth. At the dogs groups, similar Índex of bacterial plaque were observed on the diffèrent dental groups. The dogs from group II and the incisive tooth group showed minar bacterial plaque index.

  16. Mutilação dentária: concepções de trabalhadores rurais sobre a responsabilidade pela perda dentária

    Directory of Open Access Journals (Sweden)

    Teresa Cristina Mendonça

    Full Text Available O desdentamento no Brasil é uma prática instituída pelas instâncias de Saúde Bucal como cuidado sanitário. Este artigo apresenta a questão da perda de dentes, investigada em uma área rural de um município da Bahia, localizado no polígono das secas. A autora examina o desdentamento como fato corriqueiro entre os membros desse segmento rural, apoiada no discurso como elemento básico de informação. Seu objetivo principal é analisar as representações sobre a boca, reveladas a partir das experiências individuais, assim como as associações feitas pelos atores sobre práticas corporais (bucais, decorrentes da realidade social onde eles se encontram imersos, sendo a partir daí colocada a responsabilidade individual da perda dentária, assim como a do Estado e a dos praticantes da Odontologia.

  17. Mutilação dentária: concepções de trabalhadores rurais sobre a responsabilidade pela perda dentária

    Directory of Open Access Journals (Sweden)

    Mendonça Teresa Cristina

    2001-01-01

    Full Text Available O desdentamento no Brasil é uma prática instituída pelas instâncias de Saúde Bucal como cuidado sanitário. Este artigo apresenta a questão da perda de dentes, investigada em uma área rural de um município da Bahia, localizado no polígono das secas. A autora examina o desdentamento como fato corriqueiro entre os membros desse segmento rural, apoiada no discurso como elemento básico de informação. Seu objetivo principal é analisar as representações sobre a boca, reveladas a partir das experiências individuais, assim como as associações feitas pelos atores sobre práticas corporais (bucais, decorrentes da realidade social onde eles se encontram imersos, sendo a partir daí colocada a responsabilidade individual da perda dentária, assim como a do Estado e a dos praticantes da Odontologia.

  18. Mecanismos preventivos do flúor e cárie dentária

    OpenAIRE

    Rompante, Paulo

    2014-01-01

    A relação entre cárie dentária e os efeitos benéficos dos fluoretos são reconhecidos pela comunidade científica desde o início do século XX. As primeiras interpretações acerca dos efeitos preventivos dos fluoretos da cárie dentária fizeram-se com base em dados obtidos em comunidades nas quais foi implementada fluoretação artificial das águas de abastecimento público. Uma primeira interpretação da comunidade científica, baseada na informação disponível acerca de fluoretos e cárie den tária, fe...

  19. Cárie dentária associada ao tratamento ortodôntico fixo

    OpenAIRE

    Gonçalves, Sara Figueiredo

    2017-01-01

    A ortodontia proporciona melhoria estética e oclusão adequada, no entanto constitui risco de conduzir a cáries dentárias. Os dispositivos ortodônticos acarretam a retenção de placa bacteriana e dificultam a higienização adequada das superfícies dentárias. Os objectivos desta revisão consistem em averiguar a prevalência da doença de cárie no paciente ortodôntico, considerando os factores de risco associados à introdução deste e as alterações decorrentes no meio oral e assim como os métodos ...

  20. Tēli un motīvi Vladimira Novikova bērnu stāstu krājumā "Mīlestība un krēms brulē".

    OpenAIRE

    Fedjkina, Jeļena

    2017-01-01

    Bakalaura darbs ir veltīts tēlu un motīvu atklāšanai Vladimira Novikova bērnu stāstu krājumā “Mīlestība un krēms brulē”. Darba mērķis ir noteikt galvenos tēlus un motīvus no izvēlētā stāstu krājuma. Bakalaura darba autors secina, ka galvenie stāstu krājuma motīvi ir bērnības, ģimenes, skolas, skaistuma, pirmās mīlestības un draudzības motīvi, bet tēli – skolotāja un bērna tēls. Bakalaura darbs sastāv no trim daļām. Pirmajā nodaļā ir izklāstīts bērnu literatūras galvenās funkcijas un iezīmes. ...

  1. Autopercepção da perda de dentes em idosos

    Directory of Open Access Journals (Sweden)

    Beatriz Unfer

    2006-06-01

    Full Text Available O objetivo deste trabalho foi analisar as percepções de um grupo de idosos sobre a perda de dentes. Realizou-se uma pesquisa qualitativa que utilizou O Discurso do Sujeito Coletivo como técnica metodológica para a ordenação dos dados. A análise das entrevistas e a construção do Discurso do Sujeito Coletivo revelaram informações sobre os pensamentos e valores associados à perda de dentes no grupo. Os principais resultados sugerem que a falta de dentes trouxe problemas funcionais e psicológicos, mas que parecem ser compensados pela resolução do problema estético. As justificativas reveladas pelo sujeito coletivo para o edentulismo refletem predominantemente o modelo de atenção à saúde, em que predominam procedimentos cirúrgico-restauradores e reabilitadores, em detrimento de ações preventivas e educativas. Desta forma, torna-se imprescindível o desenvolvimento de iniciativas no campo da educação e prevenção em saúde bucal, enfatizando ações voltadas para a atenção integral do idoso, destacando-se a dimensão social das doenças e o papel do Estado como provedor da saúde e da qualidade de vida de todos os cidadãos.

  2. Ocorrência de desvio radicular em dentes de cão

    Directory of Open Access Journals (Sweden)

    Gioso Marco Antonio

    2000-01-01

    Full Text Available O presente trabalho analisa a ocorrência de desvio radicular em 115 incisivos centrais e intermédios, 34 caninos e 19 quarto pré-molares superiores, totalizando 168 dentes. O desvio foi avaliado por imagens de vídeo VHS sobrepostas a um quadriculado. Os resultados mostram que 77,4% dos incisivos apresentam desvios, sendo 61,0% moderados, 28,5% pequenos e 10,5% severos (estes, apenas nas extremidades do terço apical, de acordo com adaptação da técnica proposta por SCHNEIDER6 para determinação e classificação do grau de curvatura dos canais. Para os caninos anotam-se 47,1% dos dentes com desvio, sendo 75,0% moderados e 25,0% pequenos. E para os quarto pré-molares superiores observam-se 89,4% dos dentes com desvio, sendo 75,0% moderados, 16,7% pequenos e 8,3% severos. Comparados aos desvios radiculares observados na Odontologia Humana, concluímos que a ocorrência dos mesmos é baixa para a espécie canina facilitando a instrumentação do canal radicular.

  3. Effect of growth hormone replacement therapy in a boy with Dent's disease: a case report

    Directory of Open Access Journals (Sweden)

    Ludwig Michael

    2011-08-01

    Full Text Available Abstract Introduction Dent's disease is an X-linked recessive proximal tubulopathy characterized by low molecular weight proteinuria, hypercalciuria, nephrocalcinosis, nephrolithiasis and progressive renal failure. To the best of our knowledge, this is only the third report on the use of growth hormone therapy in a child with poor growth associated with Dent's disease. Case presentation We report on a 7-year-old Montenegrin boy with proteinuria, hypercalciuria, nephrocalcinosis, rickets and short stature with unimpaired growth hormone secretion. A molecular genetic analysis showed S244L substitution on the CLCN5 gene. After two years of conventional treatment with hydrochlorothiazide, laboratory tests revealed more prominent proteinuria, mild hypophosphatemia, increased values of alkaline phosphatase and features of rickets. Phosphate salts, calcitriol, potassium citrate and growth hormone were included in the therapy. After three years of therapy, his adjusted parental stature was 1.53 standard deviations higher than at the initiation of growth hormone therapy. His global kidney functions and levels of proteinuria and calciuria remained relatively stable. In spite of the growth hormone therapy, his tubular reabsorption of phosphate deteriorated. Conclusion Treatment with recombinant human growth hormone may have a positive effect on final height in poorly growing children with Dent's disease and hypophosphatemic rickets. However, it is not possible to reach definite conclusions due to the small sample within the literature and the brief duration of the therapy.

  4. Fluorose dentária em crianças de Princesa Isabel, Paraíba

    Directory of Open Access Journals (Sweden)

    FORTE Franklin Delano Soares

    2001-01-01

    Full Text Available Diversas localidades da Paraíba possuem níveis moderados ou elevados de fluoreto in natura nas águas de abastecimento. Nas áreas onde os níveis de fluoretos são considerados "ótimos" para a região (0,6 ppm, já constatou-se uma moderada prevalência de fluorose dentária (30-40%. O presente trabalho teve por objetivo observar a prevalência de fluorose dentária na cidade de Princesa Isabel, com níveis "subótimos" de fluoretos (0,4 ppm. Foram selecionados aleatoriamente 142 escolares de 10 a 15 anos para o levantamento de fluorose dentária pelo índice TF (de Thylstrup e Fejerskov. Os exames foram realizados por três examinadores previamente calibrados, sob luz natural indireta e após escovação supervisionada e secagem dos elementos dentários. Cerca de 20% dos escolares examinados apresentaram fluorose dentária, sendo que 70% com TF 1 e outros 30% distribuídos em diversos graus (TF 2 a 5. Fluorose foi mais prevalente no sexo masculino e em dentes pré-molares. Embora a fluorose dentária observada esteja dentro dos níveis esperados para o teor de fluoretos (0,4 ppm, outras fontes sistêmicas de fluoretos devem ser controladas. A prevalência de fluorose dentária observada não é problema de saúde pública nesta localidade.

  5. A personal digital assistant application (MobilDent) for dental fieldwork data collection, information management and database handling.

    Science.gov (United States)

    Forsell, M; Häggström, M; Johansson, O; Sjögren, P

    2008-11-08

    To develop a personal digital assistant (PDA) application for oral health assessment fieldwork, including back-office and database systems (MobilDent). System design, construction and implementation of PDA, back-office and database systems. System requirements for MobilDent were collected, analysed and translated into system functions. User interfaces were implemented and system architecture was outlined. MobilDent was based on a platform with. NET (Microsoft) components, using an SQL Server 2005 (Microsoft) for data storage with Windows Mobile (Microsoft) operating system. The PDA devices were Dell Axim. System functions and user interfaces were specified for MobilDent. User interfaces for PDA, back-office and database systems were based on. NET programming. The PDA user interface was based on Windows suitable to a PDA display, whereas the back-office interface was designed for a normal-sized computer screen. A synchronisation module (MS Active Sync, Microsoft) was used to enable download of field data from PDA to the database. MobilDent is a feasible application for oral health assessment fieldwork, and the oral health assessment database may prove a valuable source for care planning, educational and research purposes. Further development of the MobilDent system will include wireless connectivity with download-on-demand technology.

  6. Autoestima e cárie dentária em adolescentes: um estudo seccional

    Directory of Open Access Journals (Sweden)

    Sandra Espíndola LUNARDELLI

    Full Text Available Resumo Introdução A cárie dentária na adolescência continua sendo um importante problema de saúde pública; entretanto, a sua relação com os fatores psicológicos é pouco estudada. Objetivo Estudar a possível associação entre aspectos de autoestima e cárie dentária em adolescentes. Material e método Estudo transversal envolvendo amostra de 409 adolescentes de 13 municípios do sul do Brasil. A cárie foi avaliada segundo critérios da Organização Mundial da Saúde e a autoestima, pela Escala de Rosenberg. O teste do qui-quadrado foi utilizado para determinar a significância estatística das associações. Para ajustar para variáveis de confusão, foi utilizada a regressão loglinear de Poisson com estimativa robusta. Resultado Foram observadas associações positivas entre presença de dentes cariados e alguns aspectos da escala de autoestima: “Às vezes, eu acho que não presto para nada” (p <0,001; “Eu gostaria de poder ter mais respeito comigo mesmo” (p=0,016, e “Eu, com certeza, me sinto inútil, às vezes” (p=0,022. Associação negativa foi observada com: “No conjunto, eu estou satisfeito comigo” (p=0,022. Na análise ajustada, os adolescentes com dentes cariados apresentaram maior prevalência de respostas positivas para a questão “Às vezes, eu acho que não presto para nada” [RP= 1,23 (IC 95% 1,05; 1,44] e maior prevalência de respostas negativas para a questão “No conjunto, eu estou satisfeito comigo” [RP= 1,12 (IC 95% 1,02; 1,24]. Conclusão Aspectos da autoestima foram, independente e significativamente, associados com a presença de dentes cariados.

  7. Analyse du raisonnement d'étudiants utilisant les concepts de base de l'électromagnétisme

    OpenAIRE

    Bagheri-Crosson, Roja; Venturini, Patrice

    2006-01-01

    International audience; Very few works in didactics of physics on electromagnetism showed the existence of stu-dents' difficulties concerning the comprehension and the use of the concept of magnetic field and the associated concepts. In order to understand these difficulties, we studied the reasoning used by undergraduate students when they use in various situations the basic concepts of electromagnetism, using the “theory of conceptual fields”. We thus could identify the operational invarian...

  8. Elucidating Bioethics with Undergraduates.

    Science.gov (United States)

    Hoskins, Betty B.; Shannon, Thomas A.

    1977-01-01

    Discusses the importance of developing bioethics programs for undergraduate students. Two aspects are considered: (1) current areas of concern and sources of bibliographic information; and (2) problems encountered in undergraduate projects. A list of references is provided. (HM)

  9. Engaging Undergraduates in Economics

    Science.gov (United States)

    Gajwani, Kiran; Miron, Jeffrey

    2015-01-01

    Siegfried and Stock (2007) explore the undergraduate training of PhD economists. Their findings show that among U.S. undergraduate economics programs, the Harvard University Economics Department produces many eventual economics PhD recipients. In this article, the authors discuss Harvard's undergraduate economics program and highlight some key…

  10. Introducing and evaluating MorphoDent, a Web-based learning program in dental morphology.

    Science.gov (United States)

    Mitov, Gergo; Dillschneider, Timo; Abed, Mohammad Rabbo; Hohenberg, Gregor; Pospiech, Peter

    2010-10-01

    MorphoDent, a computer-assisted learning program designed to teach the anatomy of the adult dentition, was introduced into the curriculum of dentistry at the University of Saarland in Homburg, Germany. Thirty-six second-year students of the School of Dentistry were introduced to morphoDent alongside the traditional lectures of dental anatomy. Questionnaires that evaluated the students' perceptions of virtual learning as well as aspects of the functionality of the program educational objectives were developed and distributed to the students. Online tests were performed and compared with a traditional examination. All questionnaires were returned. A wide variety of aspects dealing the pedagogic implications of e-learning were evaluated by the students, with the overall result being that students are aware of the needed hardware and technical skills and expect the quality of their studies to improve by implementation of e-learning. All sophomores except one felt that morphoDent had helped them in learning dental morphology and reported enjoying the virtual anatomical examination. One-third reported technical difficulties in operating the program. The average exam score was 2.53 (SD: 0.66) for the traditional and 2.23 (SD: 0.59) for the online dental anatomy test. Students expressed their positive attitude towards e-learning in general and indicated that the use of photorealistic 3D models of human teeth supported the process of individual learning of dental anatomy. The online test could be rated as a good option for students' self-performance rating.

  11. Abscesso perineal por ingestão acidental de palito de dente

    Directory of Open Access Journals (Sweden)

    Roberto Iglesias Lopes

    2006-06-01

    Full Text Available Palitos de dente são itens domésticos comuns e a maioria das pessoas subestima a gravidade das lesões que podem ocorrer com a ingestão acidental de palitos. Nós apresentamos um caso de abscesso perineal causado pela ingestão de um palito de dente. Um homem de 55 anos apresentou-se com quadro de dor perianal há um mês. Ao exame físico, notou-se abscesso perineal. Leucocitose com desvio à esquerda foi observada e a tomografia pélvica demonstrou um corpo estranho na região perineal. A remoção cirúrgica do corpo estranho e a drenagem adequada do abscesso foram realizadas, revelando um palito de dente. O paciente evoluiu bem após a abordagem cirúrgica. O abscesso perineal pode progredir para gangrena de Fournier e, portanto, a abordagem de abscessos perineais deve ser agressiva, com drenagem adequada e remoção do corpo estranho (sempre que presente.Toothpicks are a common household item and most people underestimate the seriousness of injuries that can occur with accidental ingestion. We report a case of a perineal abscess caused by an ingested toothpick. A 55-year-old man was admitted to the hospital with a 30-day history of perianal pain. Physical examination was unremarkable, except for a perineal abscess. Leucocytosis with 10% bands was present and pelvic tomography demonstrated a foreign body located in the perineal area. Surgical removal of the foreign body with adequate abscess drainage was performed revealing a toothpick. Perineal abscess may progress to Fournier's gangrene and as a consequence the management of a perineal abscess should be aggressive with adequate drainage and removal of the foreign body (if present.

  12. Root abnormalities, talon cusps, dentes invaginati with reduced alveolar bone levels: case report.

    LENUS (Irish Health Repository)

    McNamara, C M

    1998-03-01

    This is a case report of a Caucasian female who presented with an unusual combination of dental anomalies: short roots on the maxillary central incisors and premolars, talon cusps, dentes invaginati, low alveolar bone heights, tubercles of Carabelli on the maxillary first and second permanent molars, with pyramidal root morphology in three of the second permanent molars. None of the anomalies alone are particularly uncommon but they have not previously been reported together. The occurrence of the anomalies is probably incidental as the conditions are aetiologically unrelated.

  13. Alterações tridimensionais dos arcos dentários de pacientes submetidos à cirurgia ortognática

    OpenAIRE

    Peixoto, Adriano Porto [UNESP

    2008-01-01

    O tratamento ortodôntico-cirúrgico pode levar a mudanças dimensionais dos arcos dentários nos períodos pré e pós-cirúrgico. Existem poucos estudos bem formulados que procuraram avaliar as mudanças pré e pós-cirúrgicas nas dimensões dos arcos dentários e sua correlação com a estabilidade. Tais mudanças, somente podem ser corretamente avaliadas através de ferramentas tridimensionais. Modelos de gesso dos arcos dentário superior e inferior de pacientes submetidos a tratamento ortodôntico-cirúrgi...

  14. Microdureza e análise estrutural de dentes com amelogênese e dentinogênese imperfeita

    OpenAIRE

    Passos, Raquel Lanna

    2014-01-01

    O desenvolvimento dos dentes está sujeito à ocorrência de distúrbios de etiologia variável em suas diversas fases, o que pode gerar anomalias dentárias. Dentre as anomalias dentárias de caráter hereditário, que afetam a formação do esmalte e do complexo dentino-pulpar, podem ser mencionadas a Amelogênese Imperfeita (AI) e a Dentinogênese Imperfeita (DGI). As AI podem ou não estar associadas a síndromes e apresentam heterogeneidade clínica e genética. Por outro lado, a DGI pode ou não estar as...

  15. Anemias: caracterização e implicações em Medicina Dentária

    OpenAIRE

    Rocha, Marta Alexandra de Almeida

    2011-01-01

    Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2011 A anemia é uma das várias patologias sistémicas que têm manifestações orais. Esta é uma disfunção hematológica que resulta de uma diminuição no nível normal da hemoglobina (Hb) circulante. O objectivo principal desta dissertação é abordar os tipos de anemia que têm manifestações e implicações em Medicina Dentária. Para tal, foi realizada uma pesquisa de artigos científicos online, na base de d...

  16. Análise densitométrica digital do processo de reparo em dentes de rato reimplantados

    OpenAIRE

    Giovanini, Ellen Greves [UNESP

    2006-01-01

    A avulsão dentária é caracterizada pelo completo deslocamento do dente do seu alvéolo e a melhor forma de tratar um dente avulsionado é o seu reimplante. Mesmo diante das melhores circunstâncias os reimplantes tardios falham devido à reabsorção radicular que é detectada apenas durante a avaliação radiográfica. A imagem digital surgiu como um recurso diagnóstico rápido e de fácil utilização sendo considerada precisa. Para diminuir a variabilidade de interpretação é sugerida a análise radiográf...

  17. Percepção da saúde bucal em mulheres com perdas dentárias extensas

    Directory of Open Access Journals (Sweden)

    Francieli Regina Bortoli

    Full Text Available Resumo Este escrito tem por objetivo analisar a percepção de mulheres com perdas dentárias extensas sob o olhar da bucalidade. A pesquisa foi realizada com mulheres com essas características em uma cidade de pequeno porte no estado de Santa Catarina. A entrevista semiestruturada produziu narrativas que foram gravadas e transcritas. Depois da coleta dos dados, realizou-se a análise das informações encontradas, a fim de interpretar os dados obtidos. Os dados organizados e sistematizados resultaram em seis categorias temáticas: condição socioeconômica, representação social da prótese dentária, prática odontológica, sofrimento e dor, consequências e limitações, e gênero. Algumas percepções são bem marcantes no grupo estudado: extrair os dentes para colocar prótese dentária era motivo de alegria para algumas entrevistadas; as próteses eram desejadas, pois proporcionavam dentes bonitos. Outro achado importante refere-se à extração de dentes sadios, apenas no caso das mulheres, como preparação para o casamento. O estudo evidencia a necessidade de aprofundamento da compreensão dos eventos que ocorrem na boca, seja no cuidado bucal ou nas práticas cotidianas, no intuito de melhorar o entendimento desse espaço e, ao cabo, reunir elementos para pensar e produzir outra clínica, que inclua os sujeitos com suas diferenças e diversidade cultural.

  18. Produtos de branqueamento dentário de venda livre: avaliação de pH

    OpenAIRE

    Matos, Márcia Daniela Jesus

    2016-01-01

    Trabalho final do 5º ano com vista à atribuição do grau de mestre no âmbito do ciclo de estudos de Mestrado Integrado em Medicina Dentária apresentado à Faculdade de Medicina da Universidade de Coimbra. Introdução: Nas últimas décadas assistiu-se a um aumento da preocupação estética em relação ao sorriso por parte dos pacientes, resultando numa maior exigência nos tratamentos estéticos, nomeadamente nos tratamentos de branqueamento dentário. Com o objetivo de utilizar produtos de ...

  19. A produção das perdas dentárias: narrativas de usuários do SUS

    OpenAIRE

    Dantas, Jussara de Azevedo

    2008-01-01

    A compreensão ampliada dos efeitos da perda dentária exige escuta dos sujeitos que a experimenta. Este estudo, de abordagem qualitativa, investigou, na história odontológica de usuários do SUS, a partir do relato de suas experiências com os serviços de saúde bucal, os motivos que os levaram à perda dentária e as repercussões desta em suas vidas. A coleta de dados foi realizada por meio da técnica de entrevista narrativa, adaptada, utilizando-se roteiro semi-estruturado. Os sujeitos entr...

  20. A doença cárie como preditora de cárie em dentes decíduos e permanentes

    OpenAIRE

    Pereira, Helenaide Paiva; Costa, Victor Requejo; Antunes, Lívia Azeredo Alves; Costa, Maria da Encarnação Perez Requejo

    2016-01-01

    Vários sinais têm sido relacionados como preditores de cárie nos dentes decíduos e permanentes. Dieta cariogênica e ausência de higienização são fortemente relacionados com a presença de cárie dentária,mas a cárie em dentes decíduos tem sido apontada como forte preditora da doença nos dentes permanentes. O presente trabalho teve como objetivo relacionar a cárie nos dentes decíduos anteriores como preditora de cárie nos molares decíduos, e estes como preditores de cárie nos primeiros molares p...

  1. Resistência ao cisalhamento de dentes submetidos a duas técnicas de clareamento, pós-restaurados ou não

    Directory of Open Access Journals (Sweden)

    SIQUEIRA Evandro Luiz

    1997-01-01

    Full Text Available Os autores testaram a resistência ao cisalhamento de dentes submetidos a duas técnicas de clareamento. Foram utilizados 50 incisivos centrais superiores, divididos em 5 grupos, a saber: controle (só abertura coronária, clareamento sem calor, clareamento catalisado por calor controlado, clareamento catalisado por calor controlado e restauração com resina composta de última geração e dentes hígidos. Após o teste de cisalhamento, constatou-se que, nos dentes submetidos ao clareamento dental com perborato de sódio/Peridrol com ou sem aplicações de calor controlado, apesar de estes apresentarem leve diminuição da resistência ao cisalhamento, esta não é estatisticamente significante quando comparada com a dos dentes em que se executa o acesso endodôntico sem clareamento. A restauração do dente após o clareamento dental com adesivo dentinário de 4ª geração e resina fotopolimerizada aumenta a resistência do elemento dental clareado. Não existem diferenças estatísticas de resistência ao cisalhamento entre dentes clareados sem o uso de calor e aqueles em que o calor foi empregado de forma controlada, como preconizado neste estudo. Dentes hígidos apresentam resistência maior do que os dentes clareados com calor, sem calor e aqueles não clareados, com significância estatística no nível de 5%. Já com os dentes clareados e restaurados, os dentes hígidos não mostraram diferenças estatísticas significantes

  2. Associated dental anomalies: case report Múltiplas anomalias dentárias associadas: caso clínico

    Directory of Open Access Journals (Sweden)

    Daniela Gamba Garib

    2005-12-01

    Full Text Available Certain human dental anomalies frequently occur together, supporting the accumulated evidence of the shared genetic control of dental developmental disturbances. The present study reports a rare and interesting case of a 12-year-old girl with an association of multiple dental abnormalities, including agenesis, tooth malposition and delayed development. The etiology and treatment planning are discussed with reference to the literature. The clinical implications of genetically controlled patterns of dental anomalies are important in the establishment of early diagnosis and appropriate orthodontic intervention.Certas anomalias dentárias humanas freqüentemente ocorrem concomitantemente, contribuindo para validar as evidências do controle genético nos distúrbios de desenvolvimento. O presente estudo relata um caso raro e interessante de uma jovem de 12 anos de idade, com associação de anormalidades dentárias múltiplas, incluindo agenesia, ectopia e atraso no desenvolvimento dentário. A etiologia e tratamento planejados são discutidos com referência à literatura. As implicações clínicas do padrão de anomalias dentárias geneticamente controladas são importantes no estabelecimento do diagnóstico precoce e de adequada intervenção ortodôntica.

  3. Cárie dentária: um novo conceito Dental caries: a new concept

    Directory of Open Access Journals (Sweden)

    José Eduardo de Oliveira Lima

    2007-12-01

    Full Text Available INTRODUÇÃO: a maneira como a cárie dentária é conceituada e seus fatores etiológicos considerados têm gerado divergências, na elaboração de estratégias preventivas, entre epidemiologistas e profissionais da saúde. As considerações e o conhecimento sobre a formação, progressão e definição da lesão de cárie devem ser aprofundados, para se estabelecer critérios que favoreçam o diagnóstico, a prevenção e o tratamento, preservando a qualidade de vida do paciente. O conceito de cárie dentária como doença infecciosa, transmissível e dieta dependente deve ser revisto, e os fatores etiológicos melhor interpretados e entendidos, para evitar estratégias de prevenção e tratamento equivocadas. É necessário um posicionamento mais conclusivo de instituições científicas e universidades, objetivando o estabelecimento definitivo desses conceitos, para que possam refletir-se em resultados práticos. OBJETIVO: o objetivo deste trabalho foi trazer uma contribuição baseada em 35 anos de exercício profissional e da vivência acadêmica no ensino e pesquisa e, também, realizar uma revisão da literatura de Cariologia, com a intenção de levar a uma interpretação dos achados científicos que permita um raciocínio lógico sobre o conceito de cárie dentária e dos fatores envolvidos em sua etiologia, podendo, com isso, chegar o mais próximo possível da verdade. RESULTADOS E CONCLUSÕES: os conhecimentos adquiridos até hoje, por meio da pesquisa científica e também a partir das conclusões deste trabalho, permitem elaborar estratégias preventivas mais eficientes em todo o planeta e a cárie dentária passará a ser, dentro de pouco tempo, um problema irrelevante ao ser humano. A partir do raciocínio desenvolvido neste trabalho, pode-se concluir que a cárie dentária não deve ser considerada uma doença, mas simplesmente uma lesão do esmalte de causa local, sem fatores etiológicos determinantes, porém provocada

  4. perception of undergraduates of undergraduates' about computer

    African Journals Online (AJOL)

    eobe

    Computer and internet has omputer and internet has omputer and internet has brought innovative chang brought innovative chang computer and IT related courses have recently been i level. Therefore, level. Therefore, it was important to know the perc it was important to know the perc undergraduate students about the.

  5. Ansiedade dentária em crianças - a importância da sua gestão na consulta de odontopediatria

    OpenAIRE

    Montagna, Diana Raquel Ferreira

    2014-01-01

    A gestão da ansiedade dentária em crianças no decurso das consultas de Odontopediatria torna-se essencial para um maior sucesso dos tratamentos dentários. Assim, pretende-se avaliar os níveis de ansiedade manifestados pelas crianças face ao tratamento dentário e, simultaneamente, avaliar o grau de dor descrito no mesmo contexto clínico, de modo a relacioná-los diretamente com experiências prévias e outros fatores etiológicos de interesse, nomeadamente faixa etária, género, ansiedade parental ...

  6. Análise topográfi ca, diametral e quantitativa de túbulos dentinários em canais radiculares de dentes

    OpenAIRE

    Siviero, Mariana; Aivazoglou, Marcos U.; Camargo, Samira E. A.; Camargo, Carlos Henrique R.; Valera, Márcia C.

    2010-01-01

    O objetivo deste estudo foi avaliar o número e o diâmetro de túbulos dentinários em canais radiculares, nos diferentes terços, em dentes humanos, visando auxiliar estudos na área da permeabilidade dentinária. Para tal, foram utilizados 24 dentes humanos prémolares hígidos, divididos em 4 grupos de acordo com faixas etárias - G1: 10-15; G2: 16-30; G3: 31-45: G4: 46-80 anos de idade. Os dentes tiveram suas coroas removidas, se...

  7. Estruturação de um Banco de Dentes Humanos Structuralization of a Human Teeth Bank

    Directory of Open Access Journals (Sweden)

    Alessandra Cristina da Silva Nassif

    2003-05-01

    Full Text Available Um Banco de Dentes Humanos (BDH é uma instituição sem fins lucrativos, vinculada a uma faculdade, universidade ou outra instituição. Seu propósito é suprir as necessidades acadêmicas, fornecendo dentes humanos para pesquisa ou para treinamento laboratorial pré-clínico dos alunos, dessa forma eliminando o comércio ilegal de dentes que ainda existe nas faculdades de Odontologia. Cabe também ao BDH zelar pela eliminação da infecção cruzada que existe no manuseio indiscriminado de dentes extraídos. Para o bom funcionamento de um BDH, é fundamental um controle severo de seus procedimentos internos, que incluem a separação e o estoque de dentes, assim como o cadastro e o arquivamento das fichas dos doadores ou beneficiários. Aqui, abordaremos as funções que um BDH pode desempenhar e a forma pela qual hoje o Banco de Dentes Humanos da Faculdade de Odontologia da Universidade de São Paulo (FOUSP funciona e organiza-se.A Human Teeth Bank (HTB is a nonprofit institution, associated to a college, to a university or to some other institution. Its purpose is to fulfill academic needs, by supplying human teeth for research or for preclinical laboratory training of students, thus eliminating the illegal commerce of teeth that still takes place in dental schools. It is also up to an HTB to work for the elimination of cross-infection caused by indiscriminate handling of extracted teeth. In order to work properly, an HTB should have a strict control of its internal procedures, which include separation and stocking of teeth, as well as an appropriate maintaining of donors' and beneficiaries' records. In this article, we discuss the functions that an HTB can perform, and how the Human Teeth Bank, School of Dentistry, University of São Paulo, works and organizes itself today.

  8. Anomalias dentárias associadas: o ortodontista decodificando a genética que rege os distúrbios de desenvolvimento dentário Associated dental anomalies: the orthodontist decoding the genetics which regulates the dental development disturbances

    Directory of Open Access Journals (Sweden)

    Daniela Gamba Garib

    2010-04-01

    Full Text Available O presente trabalho versa sobre o diagnóstico e a abordagem ortodôntica das anomalias dentárias, enfatizando os aspectos etiológicos que definem tais irregularidades de desenvolvimento. Parece existir uma inter-relação genética na determinação de algumas dessas anomalias, considerando-se a alta frequência de associações. Um mesmo defeito genético pode originar diferentes manifestações fenotípicas, incluindo agenesias, microdontias, ectopias e atraso no desenvolvimento dentário. As implicações clínicas das anomalias dentárias associadas são muito relevantes, uma vez que o diagnóstico precoce de uma determinada anomalia dentária pode alertar o clínico sobre a possibilidade de desenvolvimento de outras anomalias associadas no mesmo paciente ou em outros membros da família, permitindo a intervenção ortodôntica em época oportuna.This article aims to approach the diagnosis and orthodontic intervention of the dental anomalies, emphasizing the etiological aspects which define these developmental irregularities. It seems to exist a genetic inter-relationship determining some dental anomalies, considering the high frequency of associations. The same genetic defect may give rise to different phenotypes, including tooth agenesis, microdontia, ectopias and delayed dental development. The clinical implications of the associated dental anomalies are relevant, since early detection of a single dental anomaly may call the attention of professionals to the possible development of other associated anomalies in the same patient or in the family, allowing timely orthodontic intervention.

  9. SPIC Undergraduate Programme

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 3; Issue 12. SPIC Undergraduate Programme. P K Subrahmanyam. Information and Announcements Volume 3 Issue 12 December 1998 pp 108-110. Fulltext. Click here to view fulltext PDF. Permanent link:

  10. Saúde bucal: conforto e rendimento ponderal em equinos pós-tratamento dentário

    OpenAIRE

    Alencar-Araripe, Marcio Gomes de; Universidade Estadual do Ceará, Faculdade de Veterinária, Programa de Pós-Graduação em Ciências Veterinárias, Laboratório de Imunologia e Bioquímica Animal; Costa, Ana Carolina Henrique; Universidade Estadual do Ceará, Faculdade de Veterinária, Programa de Pós-Graduação em Ciências Veterinárias, Laboratório de Imunologia e Bioquímica Animal; Costa, Behatriz Odebrecht; Universidade Estadual do Ceará, Faculdade de Veterinária, Programa de Pós-Graduação em Ciências Veterinárias, Laboratório de Imunologia e Bioquímica Animal; Castelo-Branco, Débora de Souza Collares Maia; Universidade Estadual do Ceará, Faculdade de Veterinária, Programa de Pós-Graduação em Ciências Veterinárias, Laboratório de Imunologia e Bioquímica Animal; Nunes-Pinheiro, Diana Célia Sousa; Universidade Estadual do Ceará, Faculdade de Veterinária, Programa de Pós-Graduação em Ciências Veterinárias, Laboratório de Imunologia e Bioquímica Animal

    2013-01-01

    Alterações dentárias podem ocasionar lesões em tecidos moles, causando prejuízo à mastigação e ao desempenho animal. O objetivo do trabalho foi avaliar o efeito da correção dentária, em equinos sem histórico de tratamentos prévios, e o reflexo do sucesso no tratamento sobre o ganho de peso pós-tratamento, bem como a melhoria do conforto mastigatório e redução dos ferimentos intraorais. Para tanto, 40 animais foram avaliados, sendo 27 equinos utilizados para policiamento (grupo 1) e 13 equinos...

  11. Uma abordagem conservadora para restaurações de compósito direto em dentes anteriores fraturados

    OpenAIRE

    Conceição, Ewerton Nocchi; Dillenburg, Álvaro Luiz Kroeff; Masotti, Alexandre Severo; Melara, Rafael

    2005-01-01

    Este trabalho apresenta o relato de um caso clínico onde foram realizadas restaurações de compósito direto em dentes anteriores fraturados com uma abordagem conservadora. Esta representou a ausência de realização de qualquer desgaste dentário, nem mesmo de bisel, e a aplicação de compósito direto com a técnica de estratificação natural. A combinação desses fatores permite uma resolução restauradora que contempla a máxima preservação tecidual com ótimo resultado estético e funcional....

  12. Cárie dentária na infância: prevalência e fatores determinantes

    OpenAIRE

    Andréa de Melo Valença, Paula

    2007-01-01

    Introdução: A cárie dentária no paciente infantil tem sido alvo de interesse entre pesquisadores. A compreensão dos seus fatores causais, assim como a relação entre eles é fundamental para a prevenção e diminuição de sua ocorrência. O tratamento da cárie só poderá ser alcançado através do conhecimento e controle dos determinantes relacionados com os processos complexos desta doença. Objetivos: Realizar uma revisão da literatura sobre os fatores que determinam a cárie dentári...

  13. Higiene dentária: relato de uma experiência com grupos de mães

    Directory of Open Access Journals (Sweden)

    Gisele Mussi Corrêa

    1984-12-01

    Full Text Available É analisada a experiência desenvolvida com grupos de mães que freqüentam o Ambulatório de Pediatria do Instituto da Criança - Professor Pedro de Alcantara do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, orientando-as na higiene dentária infantil. A experiência demonstrou que, somente a partir de uma educação contínua às mães, haverá uma redução sensível do índice de cárie dentária na população brasileira.

  14. Hydration kinetics, physicochemical composition, and textural changes of transgenic corn kernels of flint, semi-flint, and dent varieties

    Directory of Open Access Journals (Sweden)

    Barbara Celuppi Marques

    2014-03-01

    Full Text Available The hydration kinetics of transgenic corn types flint DKB 245PRO, semi-flint DKB 390PRO, and dent DKB 240PRO was studied at temperatures of 30, 40, 50, and 67 °C. The concentrated parameters model was used, and it fits the experimental data well for all three cultivars. The chemical composition of the corn kernels was also evaluated. The corn cultivar influenced the initial rate of absorption and the water equilibrium concentration, and the dent corn absorbed more water than the other cultivars at the four temperatures analyzed. The effect of hydration on the kernel texture was also studied, and it was observed that there was no significant difference in the deformation force required for all three corn types analyzed with longer hydration period.

  15. Estudos sobre eficácia e efeitos adversos da escovação dentária

    OpenAIRE

    Nicolle Ranzan

    2016-01-01

    Sabe-se que o controle do biofilme supragengival por meio da escovação dentária é fundamental para prevenção de gengivite e cárie dentária. Entretanto, a literatura ainda é escassa quanto a características de um modelo de escova manual ideal, que seja t.1o efetiva no controle de placa, quanto segura. O objetivo desta dissertação foi avaliar a eficácia de duas escovas manuais na remoção do biofilme supragengival, bem como investigar a relação entre dureza de cerdas e formato da ponta de escova...

  16. Prevalência de fluorose dentária em escolares de Marinópolis, São Paulo

    Directory of Open Access Journals (Sweden)

    Ioneide Maria Gomes Brandão

    Full Text Available O objetivo deste estudo foi determinar a freqüência e severidade da fluorose dentária em escolares de 5 a 12 e de 15 anos de idade da cidade de Marinópolis, São Paulo, Brasil, com o propósito de se obter um banco de dados-base inicial para o monitoramento da fluorose dentária nesta população. Foram envolvidos todos os escolares de ambos os sexos, nas idades citadas, matriculados nas instituições de ensino da referida cidade e tendo como pré-requisito a condição de residirem em Marinópolis desde o nascimento, totalizando 320 escolares. Os exames foram realizados por um examinador previamente calibrado para a aplicação do Índice de Dean. De acordo com os resultados, a prevalência de fluorose dentária no grupo estudado foi de 17,2%; no entanto, considerando apenas os graus de fluorose que determinam comprometimento estético (leve, moderado e severo, o percentual foi de 7,19%. O grau predominante foi o muito leve (10,0% seguido pelos graus leve (5,3%, moderado (1,3% e severo (0,6%. Conclui-se que a fluorose dentária na população estudada não se constitui em problema de amplas dimensões; estudos posteriores, contudo, são necessários, a fim de identificar as causas da presença de casos de fluorose moderada e severa.

  17. What Is Undergraduate Research?

    Science.gov (United States)

    Halstead, Judith A.

    1997-12-01

    The Council on Undergraduate Research promotes and assists development of collaborative student/faculty research at primarily undergraduate colleges and universities. Most science educators today accept such research as a critical component of an undergraduate science education. Research provides the primary opportunity for students to engage in the practice of science. We can draw an analogy between sports training and the education of young scientists. We cannot train future tennis players exclusively by providing them with lectures on tennis and supervising them performing skill-development drills. To become skilled at their game, tennis players must engage in active competition. Similarly, young scientists must engage in the enterprise that affords our understanding of the physical universe. Only by participating in scientific investigation can students understand the nature of science and become scientists.

  18. Undergraduate Program: Philadelphia

    Science.gov (United States)

    Betsock, Lori

    2008-08-01

    Undergraduate chemical science students—join us in Philadelphia on August 17 and 18, 2008, for an educational and career-oriented program designed specifically for you. Attend symposia about global climate change and clean energy; hear Nobel Laureate F. Sherwood Rowland speak about his fascinating career, "A Life in Tracer Chemistry". Weigh options for your future by attending the Graduate School Reality Check and graduate school recruiting events. All events will take place in the Sheraton Philadelphia City Center at 17th and Race Streets, except the Undergraduate Poster Sessions and Sci-Mix, which will be held in the Pennsylvania Convention Center.

  19. Efeito do ascorbato de sódio na adesividade da resina composta em dentes clareados = Effect of sodium ascorbate on composite resin bond strength to bleached teeth

    Directory of Open Access Journals (Sweden)

    Xavier, Ana Claudia Carvalho

    2014-01-01

    Full Text Available Objetivo: Avaliar o efeito do ascorbato de sódio na adesão de resina composta em dentes submetidos a tratamento clareador. Métodos: Foram utilizados 40 pré-molares humanos, divididos em 4 grupos: C – (controle dentes não clareados; S – dentes clareados com peróxido de hidrogênio 35% e armazenados por 48 horas em saliva artificial; AS – dentes clareados com peróxido de hidrogênio 35% e irrigados com solução de ascorbato de sódio 10% por 10 minutos; AG – dentes submetidos a tratamento clareador com peróxido de hidrogênio 35% e imersos em gel de ascorbato de sódio 10% por 3 horas. Após a restauração, as amostras foram seccionadas e submetidas ao teste de microtração em máquina de ensaios universais (Emic sob velocidade de 1 mm/min. Os dados foram avaliados e submetidos aos testes estatísticos ANOVA e Tukey, com nível de significância 5%. Resultados: O grupo C apresentou o maior valor de adesividade, diferindo estatisticamente dos grupos S e AG. Conclusão: A manutenção dos dentes clareados em saliva por 48 horas não é suficiente para a recuperação da resistência adesiva. No entanto, a utilização da solução de ascorbato de sódio 10% por 10 minutos pode promover uma resistência adesiva adequada, permitindo a imediata restauração dos dentes

  20. Conducting Mathematical Research with Undergraduates

    Science.gov (United States)

    Roberts, Gareth E.

    2013-01-01

    The notion that undergraduates are capable of making profound and original contributions to mathematical research is rapidly gaining acceptance. Undergraduates bring their enthusiasm, creativity, curiosity, and perseverance to bona fide research problems. This article discusses some of the key issues concerning undergraduate mathematical research:…

  1. Comparison of some properties of four provisional restorations resin: Trim, Tempron, Acropars TRII & Duralay (Aria Dent

    Directory of Open Access Journals (Sweden)

    Monzavi A.

    2006-08-01

    Full Text Available Background and Aim: Use of provisional restorations is one of the important phases in the treatment of patients who need fixed prosthesis. Some physical properties are required for these materials. The purpose of this study was the comparison of some physical properties of 4 kinds of resins: Trim, Tempron, Duralay (Aria Dent and Acropars TRII. Materials and Methods: In this experimental study, transverse-strength (TS, setting time (ST, polymerization shrinkage (PS and temperature rise (TR during polymerization were tested. In transverse strength test, 5 samples of each resin were made. TS testing was done with an Instron testing machine. ST testing (5 samples in each group was done with Gilmore needle. In PS test, 11 cylindric samples were prepared from each resin and the shrinkage was examined with digital micrometer (up to 24 hours. In TR test, after mixing the powder and liquid of resins (8 samples in each group, the temperature rise was recorded with 10 seconds interval (up to 15 minutes. Data were analyzed with one-way ANOVA and Tukey HSD tests with p<0.05 as the limit of significance. Results: In TS test, all samples of Trim were bent and no fracture was observed, while Tempron and Duralay showed no significant difference. Both Tempron and Duralay revealed high significant difference with Acropars TRII (P <0.01. In ST test, the difference between groups was significant (P<0.01. The lowest ST was observed in Acropars TRII (7 min, and the highest in Tempron (9.53 min. In PS test, significant difference was observed between Trim and Acropars TRII (P<0.01. PS was completed after 120 min in Tempron and Trim groups. However, PS continued to increase in other groups. In TR test, the difference between groups was significant (P<0.05. Duralay showed the highest TR and the lowest was seen in Trim. Conclusion: In this study, Trim showed better properties than other studied groups. Acropars TRII had the lowest strength. The highest temperature rise

  2. Nephrolithiasis, kidney failure and bone disorders in Dent disease patients with and without CLCN5 mutations.

    Science.gov (United States)

    Anglani, Franca; D'Angelo, Angela; Bertizzolo, Luisa Maria; Tosetto, Enrica; Ceol, Monica; Cremasco, Daniela; Bonfante, Luciana; Addis, Maria Antonietta; Del Prete, Dorella

    2015-01-01

    Dent disease (DD) is a rare X-linked recessive renal tubulopathy characterised by low-molecular-weight proteinuria (LMWP), hypercalciuria, nephrocalcinosis and/or nephrolithiasis. DD is caused by mutations in both the CLCN5 and OCRL genes. CLCN5 encodes the electrogenic chloride/proton exchanger ClC-5 which is involved in the tubular reabsorption of albumin and LMW proteins, OCRL encodes the inositol polyphosphate 5-phosphatase, and was initially associated with Lowe syndrome. In approximately 25 % of patients, no CLCN5 and OCRL mutations were detected. The aim of our study was to evaluate whether calcium phosphate metabolism disorders and their clinical complications are differently distributed among DD patients with and without CLCN5 mutations. Sixty-four male subjects were studied and classified into three groups: Group I (with CLCN5 mutations), Group II (without CLCN5 mutations) and Group III (family members with the same CLCN5 mutation). LMWP, hypercalciuria and phosphaturic tubulopathy and the consequent clinical complications nephrocalcinosis, nephrolithiasis, bone disorders, and chronic kidney disease (CKD) were considered present or absent in each patient. We found that the distribution of nephrolithiasis, bone disorders and CKD differs among patients with and without CLCN5 mutations. Only in patients harbouring CLCN5 mutations was age-independent nephrolithiasis associated with hypercalciuria, suggesting that nephrolithiasis is linked to altered proximal tubular function caused by a loss of ClC-5 function, in agreement with ClC-5 KO animal models. Similarly, only in patients harbouring CLCN5 mutations was age-independent kidney failure associated with nephrocalcinosis, suggesting that kidney failure is the consequence of a ClC-5 dysfunction, as in ClC-5 KO animal models. Bone disorders are a relevant feature of DD phenotype, as patients were mainly young males and this complication occurred independently of age. The triad of symptoms, LMWP

  3. A study of effective sequences on micro-CT in the dent-maxillo-facial region

    International Nuclear Information System (INIS)

    Kato, Masataka; Mori, Shintaro; Sakayanagi, Masashi; Fujita, Yuzo; Kaneda, Takashi

    2005-01-01

    value is 600 for tooth and 400 for the mandible (p<0.01). Micro-CT of the tooth is useful for evaluation of dent-maxillo facial structures such as the tooth and mandible. (author)

  4. Desenvolvimento do germe dentário e do palato em fetos de camundongos sob o efeito da Sinvastatina

    Directory of Open Access Journals (Sweden)

    Fernanda Florian

    Full Text Available INTRODUÇÃO: As estatinas causaram uma revolução na prevenção e no tratamento do colesterol alto, porém é contraindicada no primeiro trimestre da gravidez, pois podem causar má formação no feto, no sistema nervoso central e nos membros. OBJETIVO: Verificar os efeitos da Sinvastatina na formação do palato e no desenvolvimento dos germes dentários dos primeiros molares superiores e inferiores. MATERIAL E MÉTODO: Para o acasalamento, foram utilizados 14 camundongos fêmeas e quatro machos; o dia 'zero' da gestação foi identificado pelo plug vaginal após acasalamento. As fêmeas prenhes foram divididas em Grupos I e III - receberam 10 mg/kg solução salina em três semanas antes do acasalamento e a partir do acasalamento até o 14.º dia de prenhez, respectivamente. Grupos II e IV receberam 10 mg/kg de Sinvastatina, no período de três semanas antes do acasalamento e a partir do acasalamento até o 14.º dia de prenhez, respectivamente. RESULTADO: A análise histológica dos fetos dos Grupos I, II, III e IV mostrou o palato fusionado na linha mediana do processo palatino. Os germes dentários dos primeiros molares dos Grupos II e IV apresentaram um desenvolvimento atrasado quando comparados aos Grupos I e III, porém, todos estavam nas etapas de capuz e campânula. CONCLUSÃO: As análises histológica e estatística mostraram que os fetos apresentaram palato fusionado na linha média de fusão do processo palatino e os germes dentários dos Grupos II e IV mostraram-se com formas indefinidas e contornos irregulares. Este estudo preliminar mostrou que a Sinvastatina pode ocasionar alterações morfológicas nos germes dentários.

  5. Avaliação do programa saúde ocupacional aplicado aos alunos de dentística.

    OpenAIRE

    Borges, Alessandra Buhler; Pucci, César Rogério; Torres, Carlos Rocha Gomes; Barcellos, Daphne Câmara

    2010-01-01

    O objetivo deste trabalho foi avaliar a opinião dos alunos com relação ao programa Saúde Ocupacional da Disciplina de Dentística da FOSJC/UNESP. O programa aborda o aspecto preventivo das doenças que o cirurgião-dentista pode adquirir devido a sua atividade profissional. Desenvolvem-se motivação e conscientização do aluno com relação à prevenção de doenças ocupacionais (les&o...

  6. Interfaces metal-porcelana dentária : estudos de molhabilidade em novos sitemas de ligação

    OpenAIRE

    Pereira, Jorge Carlos Lopes Brás Silva

    2007-01-01

    Interfaces metal/cerâmico estão presentes em alguns sistemas de restauração dentária, tais como coroas, pontes e implantes. Os fenómenos de molhabilidade, espalhamento e adesão têm um papel importante nestes sistemas, os quais muitas vezes exibem falhas e rupturas, tendo como consequências o sofrimento e custos de substituição para o paciente. As falhas acima mencionadas devem-se sobretudo a uma fraca adesão, diferenças acentuadas no coeficiente de expansão térmica entre os ...

  7. Desenvolvimento do germe dentário e do palato em fetos de camundongos sob o efeito da Sinvastatina

    OpenAIRE

    Florian,Fernanda; Faria,Ludmilla Medeiros; Balducci,Eleny Zanella; Cirelli,Joni Augusto

    2013-01-01

    INTRODUÇÃO: As estatinas causaram uma revolução na prevenção e no tratamento do colesterol alto, porém é contraindicada no primeiro trimestre da gravidez, pois podem causar má formação no feto, no sistema nervoso central e nos membros. OBJETIVO: Verificar os efeitos da Sinvastatina na formação do palato e no desenvolvimento dos germes dentários dos primeiros molares superiores e inferiores. MATERIAL E MÉTODO: Para o acasalamento, foram utilizados 14 camundongos fêmeas e quatro machos; o dia '...

  8. Prevalência de dentes supranumerários em pacientes atendidos no Hospital Universitário da UFPI: um estudo retrospectivo de cinco anos

    Directory of Open Access Journals (Sweden)

    Walter Leal de Moura

    Full Text Available INTRODUÇÃO: Variações no desenvolvimento dentário podem implicar em alterações no número de dentes, como, por exemplo, a hiperdontia, que é caracterizada pela formação de dentes em excesso, que são chamados de supranumerários. Sua ocorrência está frequentemente associada a patologias e interferências na erupção dos dentes permanentes, que podem comprometer a estética e a oclusão. Portanto, é importante descrever seu perfil epidemiológico. OBJETIVO:Este estudo objetivou analisar dados epidemiológicos, em prontuários, avaliando a prevalência dos dentes supranumerários. MATERIAL E MÉTODO: A amostra constituiu-se de 1511 prontuários de pacientes atendidos no Hospital Universitário da Universidade Federal do Piauí, entre janeiro de 2006 e janeiro de 2011, observando-se a prevalência dos dentes supranumerários segundo número de pacientes, gênero, faixa etária, cor da pele, localização, posição no arco dentário, tipo e tratamento. RESULTADO: A prevalência dos dentes supranumerários foi de 1,99%, ocorrendo em pacientes de cor parda (78,57%, com dentição permanente (86,96%, do gênero masculino (53,33%, localizados em região posterior de maxila (35% e mandíbula (35%, e do tipo paramolar (38,10%. A maioria das cirurgias foi realizada por indicação ortodôntica (62,96% dos casos. CONCLUSÃO: De acordo com os resultados, a presença de dentes supranumerários foi um achado incomum com predominância pela maxila, sendo o tipo paramolar o mais frequente. Todos os casos foram tratados por remoção cirúrgica, sendo a maioria por indicação ortodôntica.

  9. Identification of a novel mutation in the CLCN5 gene in a Chinese family with Dent-1 disease.

    Science.gov (United States)

    Zhang, Hao; Wang, Chun; Yue, Hua; Hu, Wei-Wei; Gu, Jie-Mei; He, Jin-Wei; Fu, Wen-Zhen; Liu, Yu-Juan; Zhang, Zeng; Zhang, Zhen-Lin

    2014-02-01

    Dent disease comprises a group of X-linked recessive inherited renal tubular disorders, the symptoms of which include low-molecular-weight proteinuria (LMWP), hypercalciuria, nephrocalcinosis, and progressive renal failure. We sought to characterize the clinical manifestations and to identify the mutations associated with this disease in Chinese patients. In total, 155 DNA samples were collected from one affected individual, four of his family members, and 150 healthy donors. All 12 exons and the exon-intron boundaries of the CLCN5 gene were amplified and directly sequenced in this Chinese family. The proband demonstrated osteomalacia, which had resulted in more than 10 fractures, LMWP, and renal failure. A single base 'G' deletion at nucleotide 246 (c. 246delG) was identified in exon 5 of the CLCN5 gene in this patient, resulting in a frame shift mutation (fsX) that changed the Threonine (Thr) residue in position 83 to Proline (Pro). The proband's mother was found to be a carrier of this mutation. The present study suggests that a novel frameshift mutation (c. 246delG) in exon 5 of the CLCN5 gene is responsible for Dent disease in this case. Our findings also expand the known spectrum of CLCN5 mutations. © 2014 Asian Pacific Society of Nephrology.

  10. Cárie dentária e condições sócio-econômicas no Estado do Paraná, Brasil, 1996

    OpenAIRE

    Baldani Márcia Helena; Narvai Paulo Capel; Antunes José Leopoldo Ferreira

    2002-01-01

    O presente estudo foi conduzido com o objetivo de analisar as relações entre cárie dentária e fatores sócio-econômicos no Estado do Paraná, Brasil. Foram reunidas informações sobre a prevalência de cárie dentária (CPO-D aos 12 anos) para os municípios do Estado, conforme dados oficiais disponibilizados pela Secretaria de Estado da Saúde. Pôde-se observar correlação significante entre o índice de cárie dentária nos municípios e vários indicadores de desenvolvimento social, através da análise d...

  11. Avaliação "in vitro" da microinfiltração em dentes restaurados com resinas, por imagens radiográficas

    OpenAIRE

    BARBOSA, André Luis Nunes

    2013-01-01

    Inspeções neutrongráficas de microinfiltrações em dentes restaurados fornecerão aos odontólogos, informações quanto a aderência de resinas poliméricas sintéticas à cavidade dentária, após o completo processo restaurativo. Para tal, submeteu-se amostras dentárias à intervenção com broca rotativa, produzindo nelas cavidades de dimensões similares, que foram cuidadosamente preenchidas com diferentes resinas sintéticas de forma a se evitar a ocorrência de vazios. Empregou-se oito tipos de resinas...

  12. A importância do xilitol na prevenção da cárie dentária

    OpenAIRE

    Sousa, Ana Marta Crespo de

    2014-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária A cárie dentária é uma doença infeciosa crónica, transmissível, de origem bacteriana que conduz à desmineralização progressiva dos tecidos duros dentários. A sua etiologia é multifatorial, existindo fatores etiológicos primários, isto é, essenciais para que a doença se desenvolva; e fatores etiológicos secundários que, embora não sej...

  13. Expressão imuno-histoquimica de colagenase-1 e gelatinases A e B em mixomas odontogênicos e papilas de germes dentários

    OpenAIRE

    Nonaka, Cassiano Francisco Weege

    2006-01-01

    O mixoma odontogênico compartilha aspectos celulares e estruturais com a papila dentária, tendo-se implicado esta última como provável origem deste neoplasma. O propósito desta pesquisa consistiu em analisar comparativamente a expressão imuno-histoquímica de colagenase-1 (MMP-1) e gelatinases A (MMP-2) e B (MMP-9) em mixomas odontogênicos e papilas de germes dentários. Foram selecionados 12 casos de mixoma odontogênico e 08 espécimes de germes dentários, para análise da presença ou ausência d...

  14. Undergraduate Program: New Orleans

    Science.gov (United States)

    Betsock, Lori

    2008-03-01

    Undergraduate chemical science students—join us in New Orleans on April 6-7, 2008 for an educational program designed specifically for you. Attend symposia on chemistry in sports and health and learn how it impacts your life everyday; meet with graduate school recruiters. Focus on your professional future in chemistry by learning more about careers in public health and how to communicate and work effectively with cross-functional teams. Hear eminent scientist Richard B. Silverman (John Evans Professor of Chemistry, Northwestern University and author of The Organic Chemistry of Drug Design and Drug Action 2004) speak about "Drug Discovery: Ingenuity or Serendipity?" All events will take place at the Hilton Riverside Hotel in New Orleans, except the Undergraduate Research Poster Sessions and Sci-Mix, both of which will be held in Hall A of the Ernest N. Morial Convention Center.

  15. Researching with undergraduate students

    DEFF Research Database (Denmark)

    Wulf-Andersen, Trine Østergaard; Mogensen, Kevin; Hjort-Madsen, Peder

    2013-01-01

    The article presents a particular case of undergraduate students working on subprojects within the framework of their supervisors' (the authors') research project during Autumn Semester 2012 and Spring Semester 2013. The article's purpose is to show that an institutionalized focus on students...... as "research learners" rather than merely curriculum learners proves productive for both research and teaching. We describe the specific university learning context and the particular organization of undergraduate students' supervision and assistantships. The case builds on and further enhances a well......-established and proven university model of participant-directed, problem-oriented project work. We explore students' and researchers' experiences of being part of the collaboration, focusing on learning potentials and dilemmas associated with the multiple roles of researcher and student that characterized...

  16. Integrating Clinical Neuropsychology into the Undergraduate Curriculum.

    Science.gov (United States)

    Puente, Antonio E.; And Others

    1991-01-01

    Claims little information exists in undergraduate education about clinical neuropsychology. Outlines an undergraduate neuropsychology course and proposes ways to integrate the subject into existing undergraduate psychology courses. Suggests developing specialized audio-visual materials for telecourses or existing courses. (NL)

  17. Sage for undergraduates

    CERN Document Server

    Bard, Gregory V

    2015-01-01

    Professor Bard has provided a valuable service by carefully explaining everything an undergraduate student of mathematics, or a teacher of these topics, needs to get started with Sage quickly and easily. It will also be useful for any student or teacher of another STEM discipline. There is an excellent mix of the most frequently used commands, along with warnings about common pitfalls or caveats. I highly recommend it for anyone new to Sage, or who desires an overview of the system's impressive capabilities. -Robert A. Beezer, University of Puget Sound This book is a sort of "Missing Manual"

  18. A abordagem da grávida na prática da medicina dentária

    OpenAIRE

    Grilo, Mariana Gomes Pinto

    2016-01-01

    Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz A gravidez é um período marcado por profundas alterações fisiológicas que atingem todos os órgãos e sistemas, incluindo a cavidade oral, as quais são resultantes, principalmente, da elevação dos estrogénios e da progesterona circulantes. Estas adaptações do organismo materno condicionam particularidades na abordagem da grávida com patologia dentária que é necessário ter em consideração. As ...

  19. Cárie dentária em indivíduos com Síndrome de Down

    OpenAIRE

    Maurício José Santos Moreira

    2016-01-01

    A síndrome de Down (SD) é a anomalia genética mais comum em seres humanos e acomete todas as etnias e níveis socioeconômicos. Esta síndrome também se manifesta na cavidade bucal dos indivíduos, alterando tecidos moles e duros, a constituição salivar e a microbiologia oral. Em relação à cárie dentária, muitos estudos na literatura avaliaram a experiência desta doença nas pessoas com SD, mas os resultados são conflitantes. Enquanto a maioria dos trabalhos reportou uma menor experiência de cárie...

  20. Efeitos do Laser de Dióxido de Carbono (CO2) no esmalte dentário

    OpenAIRE

    Karlla Almeida Vieira

    2010-01-01

    Resumo: A irradiação do esmalte dentário com o laser de Dióxido de Carbono (CO2) modifica a superfície deste substrato e traz benefícios no que diz respeito a um aumento na resistência aos ácidos quando ocorre um desafio cariogênico. Sendo assim, esta tese constituída por 2 artigos, teve os seguintes objetivos: (1) revisar sistematicamente o efeito da irradiação do esmalte (mudanças morfológicas e de composição) pelo laser de CO2 com comprimento de onda 10,6 µm e sua resistência a desminerali...

  1. Ruído Ocupacional e sua Percepção pelos Alunos de Medicina Dentária

    OpenAIRE

    Mergulhão, Filipa Costa

    2009-01-01

    Monografia apresentada à Universidade Fernando Pessoa para obtenção do grau Licenciada em Medicina Dentária O médico dentista está exposto diariamente, no seu ambiente de trabalho, a níveis de ruído provenientes de instrumentos e equipamentos prejudiciais à saúde, que além de promoverem alterações no sistema auditivo podem causar manifestações sistémicas como nervosismo, irritabilidade, stress, depressão, taquicardia e alterações da pressão arterial. O facto de o ruído não pode...

  2. Intrusão dentária utilizando mini-implantes Orthodontic intrusion with mini-implant anchorage

    Directory of Open Access Journals (Sweden)

    Telma Martins de Araújo

    2008-10-01

    Full Text Available INTRODUÇÃO: dentre os diversos tipos de movimentos dentários induzidos ortodonticamente, o de intrusão é, sem dúvida, um dos mais difíceis de serem conseguidos. A mecânica intrusiva convencional, apesar de viável, é complexa, no que diz respeito ao controle de seus efeitos colaterais. Isso, em grande parte, refere-se à dificuldade em se obter uma ancoragem satisfatória. Neste contexto, os mini-implantes, por oferecerem efetiva ancoragem esquelética, têm se mostrado de extrema valia para os ortodontistas, tornando a intrusão, tanto de dentes anteriores quanto posteriores, um procedimento cada vez mais simples, do ponto de vista mecânico. OBJETIVO: pretende-se, então, neste artigo, descrever e demonstrar, clinicamente, as diversas possibilidades de utilização dos mini-implantes como recurso de ancoragem para o movimento de intrusão.INTRODUCTION: Among all different varieties of orthodontically induced tooth movement, intrusion is, without doubt, one of the most difficult movements to be reached. Conventional intrusive biomechanics, although possible, may lead to undesirable side-effects. These events, in most cases, are related to the difficulty in obtaining an efficient anchorage unit. Then, mini-implants, because of their high success rates of effective skeletal anchorage, are valuable devices to orthodontists, transforming the intrusion movement, both at the anterior and the posterior regions, a more and more uncomplicated biomechanical procedure. AIM: to describe and show, clinically, different ways of using mini-implants as an anchorage system to intrusion movement.

  3. Undergraduate Students' Information Search Practices

    Science.gov (United States)

    Nikolopoulou, Kleopatra; Gialamas, Vasilis

    2011-01-01

    This paper investigates undergraduate students' information search practices. The subjects were 250 undergraduate students from two university departments in Greece, and a questionnaire was used to document their search practices. The results showed that the Web was the primary information system searched in order to find information for…

  4. Researching Undergraduate Social Science Research

    Science.gov (United States)

    Rand, Jane

    2016-01-01

    The experience(s) of undergraduate research students in the social sciences is under-represented in the literature in comparison to the natural sciences or science, technology, engineering and maths (STEM). The strength of STEM undergraduate research learning environments is understood to be related to an apprenticeship-mode of learning supported…

  5. Undergraduate students' perceived academic environmental ...

    African Journals Online (AJOL)

    This study examined the relationship between undergraduates' perception of the academic environment, their attitude to academic work and achievement. A total of 348 undergraduates who formed the sample were drawn from five departments in three universities in Nigeria. The study revealed that four dimensions of the ...

  6. Matrix groups for undergraduates

    CERN Document Server

    Tapp, Kristopher

    2016-01-01

    Matrix groups touch an enormous spectrum of the mathematical arena. This textbook brings them into the undergraduate curriculum. It makes an excellent one-semester course for students familiar with linear and abstract algebra and prepares them for a graduate course on Lie groups. Matrix Groups for Undergraduates is concrete and example-driven, with geometric motivation and rigorous proofs. The story begins and ends with the rotations of a globe. In between, the author combines rigor and intuition to describe the basic objects of Lie theory: Lie algebras, matrix exponentiation, Lie brackets, maximal tori, homogeneous spaces, and roots. This second edition includes two new chapters that allow for an easier transition to the general theory of Lie groups. From reviews of the First Edition: This book could be used as an excellent textbook for a one semester course at university and it will prepare students for a graduate course on Lie groups, Lie algebras, etc. … The book combines an intuitive style of writing w...

  7. Decisão pela extração dentária e incidência de cáries e perdas dentárias em idosos da coorte de Carlos Barbosa, RS : perspectivas qualitativa e quantitativa

    OpenAIRE

    Renato José De Marchi

    2012-01-01

    Introdução: A perda dentária e o edentulismo podem afetar de maneira significativa a saúde bucal e a saúde geral, a qualidade de vida, e a nutrição de idosos. A cárie e a perda dentária têm sido descritas como o resultado de processos que envolvem elementos biológicos, nas superfícies dentárias, e de uma combinação de fatores comportamentais e sociais. Além disso, o contexto histórico no qual os indivíduos estão inseridos influencia seus comportamentos e percepções em relação à saúde bucal. U...

  8. Fra STU-praktik til job

    DEFF Research Database (Denmark)

    Rasmussen, Kim

    Rapporten består af 4 dele: 1.del - Metode, tilgang og baggrundsviden 2.del - Samarbejde mellem Glad Fagskole og virksomheder 3.del - Erfaringer og oplevelser med praktik 4.del - De unge - elevernes / praktikanternes oplevelser...

  9. Developing Effective Undergraduate Research Experience

    Science.gov (United States)

    Evans, Michael; Ilie, Carolina C.

    2011-03-01

    Undergraduate research is a valuable educational tool for students pursuing a degree in physics, but these experiences can become problematic and ineffective if not handled properly. Undergraduate research should be planned as an immersive learning experience in which the student has the opportunity to develop his/her skills in accordance with their interests. Effective undergraduate research experiences are marked by clear, measurable objectives and frequent student-professor collaboration. These objectives should reflect the long and short-term goals of the individual undergraduates, with a heightened focus on developing research skills for future use. 1. Seymour, E., Hunter, A.-B., Laursen, S. L. and DeAntoni, T. (2004), ``Establishing the benefits of research experiences for undergraduates in the sciences: First findings from a three-year study''. Science Education, 88: 493--534. 2. Behar-Horenstein, Linda S., Johnson, Melissa L. ``Enticing Students to Enter Into Undergraduate Research: The Instrumentality of an Undergraduate Course.'' Journal of College Science Teaching 39.3 (2010): 62-70.

  10. Análise in vitro da expressão de proteínas da matriz extracelular (MEC) e de metaloproteinases da matriz (MMPs) em células-tronco adultas de polpa dentária humana

    OpenAIRE

    Sueli Patricia Harumi Miyagi

    2008-01-01

    Células-tronco adultas podem ser isoladas de vários tecidos, dentre eles a polpa dentária humana, tecido originado na papila dentária do dente em desenvolvimento. Estas linhagens multipotentes podem ser estudadas sob vários aspectos, como na elucidação da histogênese de tumores. O objetivo deste estudo foi inferir a histogênese do mixoma odontogênico, neoplasia odontogênica benigna, analisando a expressão de proteínas da matriz extracelular (MEC) e de metaloproteinases da matriz (MMPs) em cél...

  11. Análise de custo de materiais utilizados em restaurações dentárias em resina composta

    Directory of Open Access Journals (Sweden)

    Eduardo Hebling

    Full Text Available INTRODUÇÃO: As resinas compostas são materiais usualmente utilizados em restaurações dentárias diretas de dentes posteriores. O custo dos materiais faz parte do cálculo do valor dos honorários odontológicos. OBJETIVO: O objetivo deste trabalho foi determinar e analisar o valor total do custo dos materiais utilizados para a confecção de restaurações dentárias diretas de dentes posteriores em resina composta. MATERIAL E MÉTODO: O cálculo dos custos foi baseado no método de sistema de custeio variável. A lista dos materiais foi obtida por meio de consulta a uma banca de juízes e baseada nos padrões de excelência comprovados na literatura para atendimento em equipe. Os valores dos materiais foram obtidos de uma média dos valores consultados no mercado fornecedor. As repetições foram obtidas de preparos cavitários Classes I e II em dentes pré-molares e molares artificiais pré-fabricados. Os materiais foram quantificados para cada tipo de preparo. As resinas compostas utilizadas foram pesadas em balança de precisão após a sua inserção em cada tipo de preparo. Os dados foram avaliados por estatística descritiva e pelos testes de Mann-Whitney e Kruskal-Wallis. RESULTADO: O custo encontrado para restauração de Classe I foi de R$17,56 e, para a de Classe II, de R$17,73. Não houve diferença estatística no custo entre os tipos de preparo e de dentes, sendo a média total de R$17,65. CONCLUSÃO: Os valores encontrados podem ser utilizados no cálculo do valor final do procedimento restaurador, auxiliando na gestão de serviços odontológicos públicos ou privados.

  12. Undergraduate Training in Nutritional Science

    Science.gov (United States)

    Briggs, George M.

    1972-01-01

    Discusses need to establish minimum standards of training for nutrition educators,'' and standardized curricula at the undergraduate level. Gives attention to definitions, adequate training, and suggested guidelines as a starting point for further discussion. (LK)

  13. Vacina contra a cárie dentária: perspetivas e preocupações: uma opção possível?

    OpenAIRE

    Delgado, João Carlos Ribeiro

    2014-01-01

    Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz A cárie dentária é uma doença infeciosa e transmissível, que afeta o ser humano em todo o mundo, independentemente da raça, sexo, idade ou condição social. Streptococcus mutans é considerado como o principal agente etiológico da cárie dentária em humanos. Produtos de ligação como polímeros da glucose (glucano) e proteínas (glucosiltransferases e adesinas) são fatores de virulência de Strept...

  14. Dental age in patients with Down syndrome Idade dentária em pacientes com síndrome de Down

    Directory of Open Access Journals (Sweden)

    Mari Eli Leonelli de Moraes

    2007-09-01

    Full Text Available The aim of this research was to evaluate dental age in 102 patients with Down Syndrome, using panoramic radiographs. A software program developed by the Discipline of Radiology, School of Dentistry of São José dos Campos, São Paulo State University (UNESP, was used. A table of mineralization chronology of permanent teeth among Brazilians conceived by Nicodemo, Moraes and Medici Filho was used within the software. Statistical analysis of the results showed that 70.91% of the males and 61.21% of the females presented advanced dental age. Only 32.09% of the males and 38.79% of the females presented delayed dental age. Regarding the differences between the dental and chronological ages, two thirds of the males and females presented dental age with differences of up to 12 months, which means that they can be considered to be within normal standards, whereas only 18.87% of the males and 10.21% of the females presented dental age outside normal standards, with differences of over 24 months. In conclusion, the majority of the patients with Down Syndrome were considered to be within the normal standards of mineralization chronology.O objetivo desta pesquisa foi avaliar a idade dentária em 102 indivíduos com síndrome de Down, por meio de radiografias panorâmicas. Foi usado um "software" desenvolvido pela disciplina de Radiologia da Faculdade de Odontologia de São José dos Campos (UNESP. Neste "software", foi utilizada a tabela de cronologia de mineralização dos dentes permanentes entre brasileiros, de Nicodemo, Moraes e Medici Filho. A análise estatística dos resultados mostrou que 70,91% dos indivíduos do sexo masculino e 61,21% do sexo feminino apresentaram idade dentária adiantada. Apenas 32,09% dos indivíduos do sexo masculino e 38,79% dos indivíduos do sexo feminino apresentaram idade dentária atrasada. Com relação às diferenças entre idade dentária e idade cronológica, dois terços dos indivíduos dos sexos masculino e

  15. Projeto de detalhe e desenvolvimento de um novo dispositivo médico auxiliar para extração de dentes e raízes

    OpenAIRE

    Madeira, Sara Cristina Soares

    2013-01-01

    Dissertação de mestrado integrado em Engenharia Biomédica Este trabalho tem como principal objetivo projetar e construir um protótipo de um novo dispositivo que permita auxiliar o médico dentista na extração de dentes humanos. Este protótipo pretende levar ao desenvolvimento de um dispositivo útil, simples, eficiente, de fácil adaptação e capaz de melhorar a extração dentária através do recurso à vibração. O projeto é constituído por diferentes fases. Numa primeira fase, aprese...

  16. Undergraduate medical education.

    Science.gov (United States)

    Rees, L; Wass, J

    1993-01-23

    Pressures from students and teachers, from professional bodies, and from changes in the way health care is delivered are all forcing a rethink of how medical students should be taught. These pressures may be more intense in London but are not confined to it. The recommendation the Tomlinson report advocates that has been generally welcomed is for more investment in primary care in London. General practitioners have much to teach medical schools about effective ways of learning, but incentives for teaching students in general practice are currently low, organising such teaching is difficult and needs resources, and resistance within traditional medical school hierarchies needs to be overcome. Likewise, students value learning within local communities, but the effort demanded of public health departments and community organisations is great at a time when they are under greater pressure than ever before. The arguments over research that favour concentration in four multifaculty schools are less clear cut for undergraduate education, where personal support for students is important. An immediate concern is that the effort demanded for reorganising along the lines suggested by Tomlinson will not leave medical schools much energy for innovating.

  17. Continuing professional development systems and requirements for graduate dentists in the EU: survey results from the DentCPD project.

    Science.gov (United States)

    Bullock, A; Bailey, S; Cowpe, J; Barnes, E; Thomas, H; Thomas, R; Phillips, S; Kavadella, A; Kossioni, A; Tsiklakis, K; Karaharju-Suvanto, T; Suomalainen, K; Kersten, H; Povel, E; Giles, M; Walmsley, A D; Soboleva, U; Liepa, A; Akota, I

    2013-05-01

    By maintaining skills and keeping dentists up-to-date, continuing professional development (CPD) supports safe clinical practice. However, CPD for dentists across Europe is not harmonised. One aim of the 'DentCPD' project (www.dentcpd.org) was to identify and agree essential CPD requirements for EU dentists. As part of the process, data were collected on existing approaches to CPD for EU dentists. This paper reports those findings. Informed by a review of the literature and internet search, the CPD for Graduate Dentists questionnaire gathered data from dental educators on CPD systems, requirements, provision and accreditation in Europe. It sought opinion on mandatory CPD and e-learning. Responses were received from 143 individuals from 30 EU countries. About half the countries had a compulsory CPD system which typically included mandatory core topics. Elsewhere CPD was optional or based on recommended hours. University dental schools and professional dental associations were the most common CPD providers. National regulatory bodies were the most common accrediting body. Only 41% of respondents thought they knew the criteria for successful accreditation of CPD. Eighty-one percent agreed that 'CPD should be obligatory for all dentists'. These results present an overview of the status of CPD for EU dentists. Despite a notable trend towards regulated CPD systems, current requirements for dentists to engage in CPD show variation. The harmonisation of requirements would enhance both dentist mobility and safe clinical practice. © 2013 John Wiley & Sons A/S.

  18. Alterações periodontais durante a movimentação dentária induzida em ratos = Periodontal alterations during induced dental movement in rats

    Directory of Open Access Journals (Sweden)

    Silveira, Daniel

    2006-01-01

    Full Text Available Durante a aplicação de uma força constante e leve, eventos mecânicos e bioquímicos se sucedem, resultando na movimentação dentária. O deslocamento dentário inicial, ainda nos limites da largura alveolar, leva ao extravasamento do fluido do ligamento periodontal, compressão parcial dos vasos sanguíneos e distorção mecânica de fibras e células do ligamento periodontal. As alterações do fluxo sanguíneo acarretam a liberação de mediadores bioquímicos que resultam no recrutamento de osteoclastos e, conseqüentemente, na remodelação óssea. Neste trabalho, os autores se propuseram a avaliar as alterações do periodonto de inserção durante a movimentação dentária induzida em ratos. A amostra foi constituída por nove ratos, divididos em três grupos, cujos primeiros molares superiores direitos foram movimentados utilizando-se uma força de 0,5 N. Os primeiros molares superiores esquerdos desempenharam o papel do grupo controle. Os animais do grupo 1 tiveram seus dentes movimentados por três dias, os do grupo 2, por sete dias e os do grupo 3, por catorze dias. Os cortes histológicos foram corados com hematoxilina e eosina e analisados em microscopia óptica. Verificou-se, durante os primeiros dias de aplicação de força, um predomínio dos fenômenos de neoformação óssea no lado de tração e de reabsorção óssea no lado de pressão

  19. Conservation Research and Development/ New Ultra-Low Carbon High Strength Steels with Improved Bake Hardenability for Enhanced Stretch Formability and Dent Resistance

    Energy Technology Data Exchange (ETDEWEB)

    Anthony J. DeArdo; C. Isaac Garcia

    2003-12-15

    Conservation Research and Development/New Ultra-Low Carbon High Strength Steels with Improved Bake Hardenability for Enhanced Stretch Formability and Dent Resistance. The experimental work can be divided into four phases. In each phase, the materials were received or designed, processed and tested, to evaluate the BH increment or response, as a function of compositions and processing conditions. Microstructural characterization by various techniques was performed in order to gain insights into the mechanisms of flow stress increment by bake hardening.

  20. Estudo da prevalência de anomalias dentárias em uma população de 9 a 18 anos pela análise de radiografias panorâmicas

    OpenAIRE

    Marques, Joel

    2010-01-01

    O presente estudo teve a finalidade de avaliar a prevalência das anomalias dentárias, dentre estas, as agenesias dentárias e o taurodontismo em pacientes de 9 a 18 anos, do Município de Campo Grande - MS, por meio da análise das imagens de radiografias panorâmicas, no período de 2009 a 2010. Avaliou-se a prevalência entre os gêneros dos elementos dentários mais envolvidos nas agenesias dentárias, do taurodontismo quanto à localização em relação aos maxilares e suas respectivas hemiarcadas. Fo...

  1. Traumatismo dentário na população pediátrica entre 6 e 15 anos de idade dos concelhos de Pinhão e Alijó

    OpenAIRE

    Vilela, Luiza de Oliveira

    2015-01-01

    Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina Dentária Com a baixa reicidiva da cárie dentária, a saúde pública começa a dar mais ênfase a outras patologias. O traumatismo dentário é considerado uma patologia irreversível e provoca consequências debilitantes e duradouras. Objectivo: Este trabalho tem a intenção de primeiramente determinar a incidência do trauma dentário nas crianças c...

  2. Protocolo clínico de avaliação e conduta no traumatismo dentário - doi:10.5020/18061230.2009.p120

    Directory of Open Access Journals (Sweden)

    Maria Carolina Bandeira Macena

    2012-01-01

    Full Text Available Objetivo: Apresentar um protocolo clínico, baseado na literatura atual, visando otimizar o atendimento emergencial do trauma dentário nas dentições decídua e permanente. Métodos: estudo de natureza documental, através de revisão da literatura de pesquisas sobre os traumatismos dentários disponíveis nas seguintes bases de dados: mEDLInE, Cochrane, Pubmed, Lilacs, BBO e SCIELO, usando-se os descritores: traumatismo dentário, classificação, diagnóstico e epidemiologia. Os protocolos produzidos pela Associação Internacional de Trauma Dental (IADT e da Academia Americana de Odontopediatria (AAPD também foram revisados. Conclusões: O protocolo clínico representa a evidência mais atual baseada na pesquisa da literatura e na vivência clínica do profissional. As recomendações apresentadas neste trabalho estão de acordo com as relatadas nos protocolos da IADT e AAPD.

  3. Prevalência de cárie em dentes permanentes de escolares do Município de São Paulo, SP, 1970-1996

    Directory of Open Access Journals (Sweden)

    Narvai Paulo C

    2000-01-01

    Full Text Available OBJETIVO: Estudar a evolução da prevalência de cárie em dentes permanentes da população infantil do Município de São Paulo, SP, no período 1970-1996, com base em levantamento epidemiológico em escolares das redes pública e privada de ensino. MÉTODOS: Utilizando metodologia recomendada pela Organização Mundial da Saúde, foram examinados 2.491 escolares de 103 unidades das redes de ensino público e privado. Foi obtida amostra probabilística, com base no cadastro das escolas do município. Os elementos amostrais foram identificados ao acaso. RESULTADOS: Observou-se que de uma situação de prevalência "muito alta" de cárie dentária nos anos 60 e 70, a população de referência evoluiu positivamente, na idade-índice de 12 anos, para um quadro de "baixa" prevalência. CONCLUSÃO: Entre 1986 e 1996 o declínio na cárie dentária, aos 12 anos de idade, foi da ordem de 68,2% entre escolares do Município de São Paulo.

  4. Prevalência de cárie em dentes permanentes de escolares do Município de São Paulo, SP, 1970-1996

    Directory of Open Access Journals (Sweden)

    Paulo C Narvai

    2000-04-01

    Full Text Available OBJETIVO: Estudar a evolução da prevalência de cárie em dentes permanentes da população infantil do Município de São Paulo, SP, no período 1970-1996, com base em levantamento epidemiológico em escolares das redes pública e privada de ensino. MÉTODOS: Utilizando metodologia recomendada pela Organização Mundial da Saúde, foram examinados 2.491 escolares de 103 unidades das redes de ensino público e privado. Foi obtida amostra probabilística, com base no cadastro das escolas do município. Os elementos amostrais foram identificados ao acaso. RESULTADOS: Observou-se que de uma situação de prevalência "muito alta" de cárie dentária nos anos 60 e 70, a população de referência evoluiu positivamente, na idade-índice de 12 anos, para um quadro de "baixa" prevalência. CONCLUSÃO: Entre 1986 e 1996 o declínio na cárie dentária, aos 12 anos de idade, foi da ordem de 68,2% entre escolares do Município de São Paulo.

  5. A STUDY OF ROOT CANAL MORPHOLOGY OF Cebus apella TEETH ESTUDO ANATÔMICO DO CANAL RADICULAR DE DENTES DE Cebus apella

    Directory of Open Access Journals (Sweden)

    Priscilla Rocha Afonso

    2008-12-01

    Full Text Available Realizou-se um estudo anatômico em dentes do Cebus apella, para análise da anatomia interna do canal radicular dessa espécie, normatizando seu uso como modelo experimental. Utilizaram-se doze animais adultos. Após a remoção do tecido orgânico, os dentes foram removidos, seccionados e fotografados, sendo analisados com um estereomicroscópio. Os resultados mostraram que os dentes apresentaram características semelhantes às dos seres humanos, mas com algumas peculiaridades, tais como: a anatomia do canal radicular variou de oval para circular; nos caninos inferiores, os canais são semelhantes a um rim, o que reflete o contorno externo da raiz; nos molares superiores, os canais mesiobucal e distobucal são ovais, seguindo o contorno geral do dente. Os autores concluem que esta espécie pode ser utilizada como modelo em pesquisas odontológicas, principalmente em estudos do tratamento do sistema de canal radicular.

    PALAVRAS-CHAVES: Anatomia, dentes, Cebus apella. An anatomic study of Cebus apella root teeth was performed to analyze the internal anatomy of permanent dentition, normalizing its use as experimental model endodontic research. Twelve adult animals were used in this study. After the removal of the organic tissue, the all teeth were removed, sectioned, analyzed and photographed with a stereomicroscope. The results showed that the anatomy of root canal of this species are similar to human dental anatomy, considering the shape, pathway and number of canals, but with some peculiarities, such as: the root canal anatomy varied from oval to circular; in the lower canines, the canals are resembled a kidney, reflecting the outside contour of the root; in the upper molars, the mesiobuccal and distobuccal canals are oval, following the general contour of the tooth. The authors conclude that this primate can be applied as models for study of root canal treatment in human beings, in special the upper central and lateral incisors

  6. Cárie dentária e condições sócio-econômicas no Estado do Paraná, Brasil, 1996

    Directory of Open Access Journals (Sweden)

    Baldani Márcia Helena

    2002-01-01

    Full Text Available O presente estudo foi conduzido com o objetivo de analisar as relações entre cárie dentária e fatores sócio-econômicos no Estado do Paraná, Brasil. Foram reunidas informações sobre a prevalência de cárie dentária (CPO-D aos 12 anos para os municípios do Estado, conforme dados oficiais disponibilizados pela Secretaria de Estado da Saúde. Pôde-se observar correlação significante entre o índice de cárie dentária nos municípios e vários indicadores de desenvolvimento social, através da análise de regressão linear simples. A relação visual entre as cidades com piores figuras de CPO-D e indicadores sociais, foi apresentada em mapas através do georreferenciamento de dados. Observou-se CPO-D médio menos elevado nos municípios cujos reservatórios de água foram fluorados. Observou-se também, correlação negativa entre o índice de cárie dentária e a proporção de domicílios ligados à rede de abastecimento de água, nos municípios com água fluorada. Nesse sentido, sublinha-se a importância desse benefício, não só como recurso para a redução dos níveis de cáries, como também para atenuar o impacto das desigualdades sócio-econômicas sobre a prevalência de cárie dentária.

  7. Impacto da perda dentária na qualidade de vida Impact of tooth loss in quality of life

    Directory of Open Access Journals (Sweden)

    Maria Elisa de Souza e Silva

    2010-05-01

    Full Text Available Para avaliar o impacto da perda dentária na qualidade de vida, foram selecionados cinquenta pacientes, usuários do Serviço Público de Saúde, em tratamento para inserção ou substituição do par de dentaduras. Antes do tratamento, aplicou-se o Oral Health Impact Profile (OHIP-14 e a coleta de dados sociodemográficos. Os escores do OHIP-14 foram obtidos por meio do peso de cada pergunta associado à escala de Likert. Maior a pontuação alcançada, maior o impacto negativo da dimensão na qualidade de vida. Na amostra, 82% eram do gênero feminino, 52% tinham 41 a 60 anos (média de 59,1 anos, e 34% eram casados. Para cada dimensão, os valores máximos OHIP-14 foram: desconforto psicológico (122; dor (121; inabilidade psicológica (113; inabilidade física (109; limitação funcional (93; incapacidade (82 e inabilidade social (76. A perda dentária ou o uso de próteses inadequadas implicam impactos negativos na qualidade de vida, especialmente no que se refere à preocupação, estresse decorrente de problemas na boca e à vergonha. Foi percebido menor impacto no que se refere às relações interpessoais e ao desenvolvimento das atividades rotineiras - dimensão inabilidade social. Estas informações são relevantes para os profissionais, pois ampliam seu conhecimento sobre pessoas desdentadas e melhoram sua capacidade de lidar com elas.In order to evaluate the impact of tooth loss in patient's quality of life, 50 volunteers were selected among patients who use the Public Health Services in treatment for their complete denture's placement or replacement. The Oral Health Impact Profile (OHIP-14 and a socio-demographic data collection were applied before treatment. The values were founded through the weight of each question in association with Likert's Scale. As higher was the score, higher was the impact in the quality of life. In this survey 82% were female, 52% of patients between 41 and 60 years old (average: 59.1, and 34% married

  8. Evaluation of fracture resistance of endodontically treated teeth restored with prefabricated posts and composites with varying quantities of remaining coronal tooth structure Avaliação da resistência à fratura de dentes tratados endodonticamente restaurados com pinos pré-fabricados e resinas compostas variando o remanescente dentário coronal

    Directory of Open Access Journals (Sweden)

    Murilo Pereira de Melo

    2005-06-01

    Full Text Available OBJECTIVES: The aim of this study was to evaluate the influence of remaining coronal tooth structure on endodontically treated teeth restored with prefabricated posts and two different composites for core build-up: dual-cured resin (Enforce Core and light-cured resin (Z-250. METHODS: Fourty freshly extracted canines were endodontically treated and divided into four groups: Group I - teeth with 3mm remaining coronal structure, restored with Enforce Core; Group II - teeth with 3mm remaining coronal structure, restored with Z-250; Group III - teeth with no remaining coronal structure, restored with Enforce; Group IV - teeth with no remaining coronal structure, restored with Z-250. After restoration, the teeth were embedded in acrylic resin and the fracture resistance was measured on a universal testing machine at 45 degrees to the long axis of the tooth until failure. RESULTS: Data were analyzed by two-way analysis of variance, which showed significant differences between groups (p=0.00. The Tukey test did not show significant differences between specimens with and without remaining coronal structure. Conversely, significant difference was observed between groups with different core build-up. The highest values of fracture resistance were found in the group restored with light-cured resin. SIGNIFICANCE: The remaining coronal tooth structure did not influence the resistance of endodontically treated teeth; however, the change of core build-up was able to modify this resistence.O objetivo desta pesquisa foi avaliar a influência do remanescente dentário coronal de dentes tratados endodonticamente, restaurados com pinos pré-fabricados e duas resinas como núcleos de preenchimento, uma de presa dual (Enforce Core e outra fotopolimerizável (Z-250. Foram utilizados 40 caninos superiores humanos extraídos, divididos em quatro grupos de 10 espécimes: Grupo l - com remanescente dentário coronal de 3mm e restaurados com Enforce Core; Grupo ll - com

  9. The Undergraduate ALFALFA Team: Outcomes for Over 250 Undergraduate Participants

    Science.gov (United States)

    Troischt, Parker; Koopmann, Rebecca A.; Haynes, Martha P.; ALFALFA Team

    2016-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) is a consortium of 19 institutions founded to promote undergraduate research and faculty development within the extragalactic ALFALFA HI blind survey project and follow-up programs. In this talk we present outcomes for the more than 250 undergraduate students who have who have participated in the program during the 8 years of funding. 40% of these students have been women and members of underrepresented groups. To date 148 undergraduate students have attended annual workshops at Arecibo Observatory, interacting with faculty, graduate students, their peers, and Arecibo staff in lectures, group activities, tours, and observing runs. Team faculty have supervised 159 summer research projects and 120 academic year (e.g., senior thesis) projects. 68 students have traveled to Arecibo Observatory for observing runs and 55 have presented their results at national meetings such as the AAS. Through participation in the UAT, students are made aware of career paths they may not have previously considered. More than 90% of alumni are attending graduate school and/or pursuing a career in STEM. 42% of those pursuing graduate degrees in Physics or Astronomy are women. This work has been supported by NSF grants AST-0724918/0902211, AST-075267/0903394, AST-0725380, and AST-1211005

  10. Professional practice and construction undergraduates' employability skills

    OpenAIRE

    Vohmann, B.; Frame, I.

    2016-01-01

    Employability skills are known to be valuable to undergraduates when entering the workplace and expected by employers, yet, in construction as in many disciplines, these skills often are not well developed. However, construction professionals frequently work in complex dynamic environments and employability skills may enhance undergraduates' practitioner effectiveness. Therefore it is important tutors exploit opportunities to help undergraduates develop their employability skills. This paper ...

  11. Teaching Economic Forecasting to Undergraduates.

    Science.gov (United States)

    Donihue, Michael R.

    1995-01-01

    Contends that academic departments have come under increasing scrutiny in terms of the scope of curriculum and teaching methods. Describes a senior undergraduate economics course in which the primary objective was to give students opportunities to combine theoretical training with quantitative skills and apply them to real-world problems. (CFR)

  12. A conference experience for undergraduates

    International Nuclear Information System (INIS)

    Collins, L.A.; Magee, N.H.; Bryant, H.C.; Zeilik, M.

    1999-01-01

    Programs launched by many universities and the federal government expose many undergraduate students in the physical sciences to research early in their careers. However, in their research experiences, undergraduates are not usually introduced to the modes by which scientific knowledge, which they may have helped gather, is communicated and evaluated by working scientists. Nor is it always made clear where the research frontiers really lie. To this end, we guided a selected group of undergraduates through a national scientific conference, followed by a week of tutorials and discussions to help them better understand what had transpired. The program complemented the basic undergraduate research endeavors by emphasizing the importance of disseminating results both to other scientists and to society in general. Tutors and discussion leaders in the second week were experts in their fields and included some of the invited speakers from the main meeting. A considerable improvement in the understanding of the issues and prospects for a career in physics was discernible among the students after their two-week experience. copyright 1999 American Association of Physics Teachers

  13. Rethinking Undergraduate Physical Chemistry Curricula

    Science.gov (United States)

    Miller, Stephen R.

    2016-01-01

    A summary of fundamental changes made to the undergraduate physical chemistry curriculum in the Chemistry Department at Gustavus Adolphus College (beginning in the 2013-2014 academic year) is presented. The yearlong sequence now consists of an introductory semester covering both quantum mechanics and thermodynamics/kinetics, followed by a second…

  14. Undergraduate Students' Attitudes toward Biodiversity

    Science.gov (United States)

    Huang, Hui-Ju; Lin, Yu-Teh Kirk

    2014-01-01

    The study investigated American and Taiwan undergraduate students' attitudes toward biodiversity. The survey questionnaire consisted of statements prompted by the question "To what extent do you agree with the following statements about problems with the biodiversity issues." Students indicated strongly disagree, disagree, agree,…

  15. Undergraduate research: a case study

    NARCIS (Netherlands)

    Koppelman, Hermannus; van Dijk, Elisabeth M.A.G.; van der Hoeven, Gerrit

    This paper describes a one semester research course for undergraduates of computing programs. Students formulate a research proposal, conduct research and write a full paper. They present the results at a one-day student conference. On the one hand we offer the students a lot of structure and

  16. Undergraduates, Technology, and Social Connections

    Science.gov (United States)

    Palmer, Betsy; Boniek, Susan; Turner, Elena; Lovell, Elyse D'nn

    2014-01-01

    The purpose of this study was to examine the spectrum of undergraduate students' social interactions and related technological tools. Qualitative methods were used for this phenomenological study exploring 35 in-person interviews, with horizonalization in an open coding system secured by in-depth analysis which revealed nuanced themes and…

  17. EERE Resources for Undergraduate Students

    Energy Technology Data Exchange (ETDEWEB)

    None

    2016-10-01

    Looking to expand your experience outside of the classroom? The Office of Energy Efficiency and Renewable Energy (EERE) at the U.S. Department of Energy (DOE) has a number of resources available for undergraduate students, including competitions, internships, and career planning information to help you navigate the education to employment pathway in energy.

  18. Astrology Beliefs among Undergraduate Students

    Science.gov (United States)

    Sugarman, Hannah; Impey, Chris; Buxner, Sanlyn; Antonellis, Jessie

    2011-01-01

    A survey of the science knowledge and attitudes toward science of nearly 10000 undergraduates at a large public university over a 20-year period included several questions addressing student beliefs in astrology and other forms of pseudoscience. The results from our data reveal that a large majority of students (78%) considered astrology "very" or…

  19. EERE Resources for Undergraduate Students

    Energy Technology Data Exchange (ETDEWEB)

    None

    2015-04-01

    Looking to expand your experience outside of the classroom? The Office of Energy Efficiency and Renewable Energy (EERE) at the U.S. Department of Energy (DOE) has a number of resources available for undergraduate students, including competitions, internships, and career planning information to help you navigate the education to employment pathway in energy.

  20. A Review of Undergraduate Physics

    Science.gov (United States)

    Bayman, Benjamin F.; Hamermesh, Morton

    1986-02-01

    A study aid for senior and graduate level students needing a review of undergraduate physics. Covers a broad range of topics, with carefully worked examples illustrating important problem-solving methods. A collection of self-test problems helps students prepare for the College Entrance Advanced Physics Examination and the Qualifying Written Examination for the PhD.

  1. Bioinformatics and the Undergraduate Curriculum

    Science.gov (United States)

    Maloney, Mark; Parker, Jeffrey; LeBlanc, Mark; Woodard, Craig T.; Glackin, Mary; Hanrahan, Michael

    2010-01-01

    Recent advances involving high-throughput techniques for data generation and analysis have made familiarity with basic bioinformatics concepts and programs a necessity in the biological sciences. Undergraduate students increasingly need training in methods related to finding and retrieving information stored in vast databases. The rapid rise of…

  2. Organization of an undergraduate research group

    International Nuclear Information System (INIS)

    Hill, J.; Noteboom, E.

    1995-01-01

    Traditionally, research groups consist of senior physicists, staff members, and graduate students. The physics department at Creighton University has formed a Relativistic Heavy Ion physics research group consisting primarily of undergraduate students. Although senior staff and graduate students are actively involved, undergraduate research and the education of undergraduates is the focus of the group. The presentation, given by two undergraduate members of the group, will outline progress made in the group's organization, discuss the benefits to the undergraduate group members, and speak to the balance which must be struck between education concerns and research goals

  3. Cárie dentária em adolescentes de 15 a 19 anos de idade no Estado de São Paulo, Brasil, 2002

    Directory of Open Access Journals (Sweden)

    Gushi Lívia Litsue

    2005-01-01

    Full Text Available Verificou-se a experiência da cárie dentária em adolescentes de 15 a 19 anos, considerando-se prevalência e severidade da doença, segundo idade, gênero, etnia e fluoretação das águas. Foi um estudo transversal realizado com dados do levantamento epidemiológico do Estado de São Paulo, Brasil, 2002, no qual 1.825 adolescentes foram examinados em seus domicílios, por 132 cirurgiões-dentistas em 35 municípios. Utilizaram-se os testes qui-quadrado, Kruskal-Wallis e Mann-Whitney (alfa= 5%. Com o SiC Index, definiu-se um terço dos indivíduos com maior experiência de cárie. O índice CPO-D foi 6,44 (dp = 4,60 e o SiC Index 11,68. O percentual de livres de cárie foi 9,6%. Não houve diferença entre o CPO-D dos municípios com e sem fluoretação, entretanto houve maior porcentagem de livres de cárie nos municípios com água fluoretada. O gênero masculino teve pior condição em relação à cárie que o gênero feminino. Os não-brancos tiveram maior percentual de dentes cariados e perdidos que os brancos. Sugere-se, portanto, a ênfase em estratégias que possam atenuar os danos causados pela progressão da doença, especialmente no grupo com maior experiência de cárie dentária.

  4. Utilização do Cone Beam CT como método tridimensional de análise de marcas dentárias

    OpenAIRE

    Caetano, Catarina

    2013-01-01

    Trabalho final do 5º ano com vista à atribuição do grau de mestre no âmbito do ciclo de estudos de Mestrado Integrado em Medicina Dentária apresentado à Faculdade de Medicina da Universidade de Coimbra. Background: The methods of registration and analysis of bite marks have evolved through the technological advances. Nowadays, the evolution of those methods it’s a priority. The three-dimensional analysis of forensic evidence has become a highlighted procedure when compared to the tradit...

  5. Resenha de livro: "Com unhas, dentes & cuca: prática culinária e papo-cabeça ao alcance de todos"

    OpenAIRE

    Schwan, Thaina Pacheco; Mestrado em Hospitalidade, Universidade Anhembi Morumbi, Sao Paulo, SP - Brasil

    2009-01-01

    Resenha do livro:ATALA, Alex; DÓRIA, Carlos Alberto. Com unhas, dentes & cuca: prática culinária e papo-cabeça ao alcance de todos. São Paulo: Senac, 2008. 352 p. Escrita por Thaina Pacheco Schwan, mestranda em Hospitalidade pela Universidade Anhembi Morumbi, pós-graduanda em Padrões Gastronômicos pela Universidade Anhembi Morumbi, Tecnóloga em Gastronomia pela Faculdade Novo Milênio (Vila Velha-ES), Chef de cozinha do Bistrô Casa do Porto e docente do curso de Gastronomia, da Faculdade Hote...

  6. Avaliação in vitro da capacidade do aparelho tri auto ZX em determinar o comprimento dos dentes nos casos de retratamento endodôntico

    OpenAIRE

    Alves, Ana Maria Hecke

    2000-01-01

    Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências da Saúde. Este estudo in vitro avaliou a odontometria eletrônica, utilizando o Tri Auto ZX, nos casos de retratamento, cujos canais apresentavam remanescente de material obturador. Sessenta e dois dentes, após o preparo dos canais, foram mensurados pelo método direto (CD) e eletrônico (CE1) para então, serem obturados. Decorridos sete dias os canais foram desobturados e nova odontometria eletrônica foi real...

  7. Caraterização dos utentes das consultas de periodontologia na Clínica Dentária Universitária Egas Moniz

    OpenAIRE

    Afonso, André Filipe Rodrigues

    2016-01-01

    Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz Objetivo: caraterizar os utentes das consultas de periodontologia da clínica dentária universitária Egas Moniz, procurando identificar os fatores de risco mais associados à doença periodontal (DP) desta população. Material e método: estudo observacional, analítico e transversal, efetuado numa amostra de conveniência de 150 utentes das consultas de periodontologia, aos quais se aplicou previ...

  8. Avaliação do perfil de risco de cárie dentária em gestantes de Araraquara, Brasil

    Directory of Open Access Journals (Sweden)

    Tatiana Carolina De Aguiar

    2011-12-01

    Full Text Available O conhecimento do risco de cárie na gravidez é essencial para um correto plano de tratamento com ações educativas e preventivas às mães para que possam cuidar adequadamente de sua saúde bucal e de seus filhos. Este estudo retrospectivo teve como objetivo identificar o risco de cárie de gestantes (15-44 anos; média= 25 anos que frequentaram a clínica de odontologia preventiva da Faculdade de Odontologia de Araraquara, Universidade Estadual Paulista de 1999 a 2007. Um total de 166 prontuários, preenchidos por alunos do 3º ano do Curso de Graduação, seguindo orientações pré-estabelecidas, foram utilizados. Coletou-se informação sobre: classificação do diagnóstico de risco de cárie, trimestre gestacional, consumo de carboidratos (entre ou durante as refeições, placa corada (registro de controle de placa de O'Leary, número e grupo de dentes com experiência de cárie. Para análise estatística foram utilizados o teste de qui-quadrado e ANOVA. A maioria das gestantes (92,1 % apresentou 25 % ou mais das superfícies dentárias com placa dental. A média (desvio-padrão de dentes obturados e cariados foi 7,9 (5,1 e 4,0 (3,4, respectiva emente. Os dentes posteriores foram os mais acometidos por cárie/restaurações. Quanto ao diagnóstico de risco à cárie, a classificação alta foi observada em 38,5 % das gestantes, moderada em 47,6 % e baixa em 13,9 %. Houve associação estatisticamente significativa (p= 0,001 entre o consumo de carboidratos e o diagnóstico de risco de cárie. O índice de placa foi semelhante nos diferentes trimestres gestacionais (f= 0,223; p= 0,803. Portanto pode-se concluir que o risco de cárie da grande maioria das gestantes foi alto ou moderado e esteve estatisticamente associado ao consumo de carboidratos.

  9. Efeito da contração de polimerização em restaurações diretas em resinas compostas em dentes posteriores

    OpenAIRE

    Bicalho, Aline Aredes

    2014-01-01

    As resinas compostas tem sido amplamente utilizadas ao longo dos anos nas restaurações de dentes posteriores. No entanto, os materiais resinosos apresentam característica inerente, a contração de polimerização que pode ser associada à manifestações clínicas indesejáveis como sensibilidade pós-operatória, infiltração marginal e cáries recorrentes. O objetivo geral deste estudo foi investigar a influência de fatores como carregamento oclusal, propriedades mecânicas dos materiais, uso de forrame...

  10. Há relação de hábitos orais deletérios com a tipologia facial e a oclusão dentária?

    Directory of Open Access Journals (Sweden)

    Cinthia Mara Johanns

    2011-12-01

    Full Text Available OBJETIVO: verificar se há predominância de hábitos orais deletérios nos diferentes tipos faciais eaprofundar o estudo da relação entre os hábitos orais deletérios e a oclusão dentária. MÉTODO: foram analisados 307 prontuários de pacientes entre 2 e 59 anos de idade de ambos os sexos, encaminhados ao ambulatório do Instituto CEFAC. Foram anotados dos prontuários os hábitos orais deletérios, oclusão dentária, tipologia facial, sexo e idade. RESULTADOS: observou-se que os hábitos com maior prevalência são: chupeta (125 indivíduos, ranger dentes (115 indivíduos e mamadeira (102 indivíduos. Dentre as comparações estudadas, as que apresentaram diferença estatisticamente significante foram: a presença do uso da chupeta no grupo de 9 a 12 anos, quando comparado ao de 6 a 9 anos (p=0,0269; presença do hábito de ranger dentes no grupo de 3 a 6 anos quando comparado ao grupo com mais de 20 anos (p=0,0393; presença do hábito de ranger dentes no grupo de oclusão dentária classe I quando comparado ao classe III (p=0,0128 e presença de oclusão dentária classe I no sexo feminino quando comparado ao masculino (p=0,0177. CONCLUSÃO: não há relação entre os hábitos orais deletérios e a tipologia facial. Entretanto, há relação entre o hábito oral deletério de ranger dentes com a oclusão dentária Classe I de Angle.

  11. [Art in undergraduate medical education].

    Science.gov (United States)

    Fjellstad, Kenneth; Isaksen, Tor Olav; Frich, Jan C

    2003-08-28

    During the last decades attempts have been made at integrating art in medical education. What should be the form, content and objectives of such teaching? We address this question on the basis of a review of articles in medical journals from 1990 until May 2001 about art and undergraduate medical education. A common reason for integrating art in undergraduate medical education is that art may act as a balance to the dominance of natural science. One pedagogical approach is to use art as a tool for training skills. Many articles emphasise that teaching art should also contribute to the personal and professional development of medical students. The majority of articles report on courses in literature and medicine. Art is often taught in small or medium-sized groups; courses may last from single lessons to programmes over years. The aim of art courses may be the development of skills, but also one of facilitating personal growth and professional development.

  12. Thermodynamics a complete undergraduate course

    CERN Document Server

    Steane, Andrew M

    2016-01-01

    This is an undergraduate textbook in thermodynamics—the science of heat, work, temperature, and entropy. The text presents thermodynamics in and of itself, as an elegant and powerful set of ideas and methods. These methods open the way to understanding a very wide range of phenomena in physics, chemistry, engineering, and biology. Starting out from an introduction of concepts at first year undergraduate level, the roles of temperature, internal energy, and entropy are explained via the laws of thermodynamics. The text employs a combination of examples, exercises, and careful discussion, with a view to conveying the feel of the subject as well as avoiding common misunderstandings. The Feynman–Smuluchowski ratchet, Szilard’s engine, and Maxwell’s daemon are used to elucidate entropy and the second law. Free energy and thermodynamic potentials are discussed at length, with applications to solids as well as fluids and flow processes. Thermal radiation is discussed, and the main ideas significant to global...

  13. Innovation of Undergraduate Medical Education

    OpenAIRE

    植村, 研一; Uemura, Kenichi

    1995-01-01

    Classical undergraduate medical education in Japan has largely based on didactic lectures, followed by protocol-guided laboratory experiments and clinical training of history taking and physical examination. Such education strategies are efficient for cramming facts and theories, which will soon become obsolete by the time when the students go into clinical practice and are not effective for education of effective clinical skills. In the cognitive domain, what students must learn are not fact...

  14. Técnica de Extração de Palinomorfos em Cálculos Dentários de Gonfotérios Sul-Americanos

    Directory of Open Access Journals (Sweden)

    Shana Yuri Misumi

    2016-01-01

    Full Text Available Foi desenvolvida uma técnica de laboratório para a extração de palinomorfos de cálculos dentários de indivíduos do gonfotério sul-americano Notiomastodon platensis. As amostras foram retiradas de espécimes molares provenientes de localidades do Nordeste e do Sul do Brasil. O procedimento constitui-se em etapas de maceração, adição de esporos exóticos de Lycopodium clavatum, reação com ácido clorídrico concentrado, lavagem com água destilada e tamisação por ultrassom. A preparação das lâminas com os palinomorfos obtidos fez uso de gelatina glicerinada. Foram recuperados grãos de pólen, esporos de pteridófitas e fragmentos de tecidos vegetais. Esta metodologia permite a extração e observação de outros microfósseis, como fitólitos, que também podem estar presentes em cálculos dentários de mamíferos herbívoros.

  15. Morfologia da junção amelocementária em dentes decíduos humanos na microscopia eletrônica de varredura e os efeitos da clareação externa

    OpenAIRE

    Leda Aparecida Francischone

    2006-01-01

    A valorização da estética não ocorre apenas no indivíduo adulto, mas também na criança. A clareação dentária externa realizada é uma alternativa viável e segura de tratamento estético desde que realizada pelo profissional e respeitados requisitos importantes como proteger os dentes e tecidos moles para que os riscos sejam os menores possíveis. Por ser o ponto frágil da estrutura dentária o conhecimento sobre a morfologia da junção amelocementária é muito importante durante alguns procedimento...

  16. A fluoretação da água de abastecimento público e seus benefícios no controle da cárie dentária: cinqüenta anos no Brasil

    OpenAIRE

    Ramires,Irene; Buzalaf,Marília Afonso Rabelo

    2007-01-01

    A fluoretação da água de abastecimento público representa uma das principais e mais importantes medidas de saúde pública no controle da cárie dentária. O objetivo deste trabalho foi o de reafirmar, através de uma revisão de literatura, a importância e o alcance da fluoretação no controle da cárie dentária. Um dos meios mais efetivos para manter constante a presença de flúor na cavidade bucal, fundamental para controle da cárie dentária, a fluoretação da água é reconhecida como um importante f...

  17. Distúrbios alimentares em adolescentes em Belo Horizonte e sua associação com erosão e cárie dentária

    OpenAIRE

    Ana Paula Brazileiro Vilar Hermont

    2012-01-01

    O cirurgião-dentista pode ser o primeiro profissional a suspeitar da ocorrência de distúrbios alimentares como a bulimia, devido aos sinais e sintomas da erosão e cárie dentária resultantes de um ambiente bucal cronicamente ácido e de uma dieta rica em carboidratos, respectivamente. Diante disso, realizou-se um estudo transversal controlado objetivando avaliar a ocorrência de erosão e cárie dentária em adolescentes em risco de estarem sofrendo de distúrbios alimentares e compará-la àquela de ...

  18. Estudo das alterações transversais do arco dentário inferior e da distância transversal da borda WALA no pré e pós-tratamento ortodôntico

    OpenAIRE

    Flenger, Anelise

    2007-01-01

    O presente estudo investigou os efeitos das alterações transversais do arco dentário inferior na largura da borda WALA, ocorridos em pacientes com má oclusão classe II, divisão 1, no pré e pós-tratamento ortodôntico. Foram selecionados 36 pacientes, na faixa etária entre 12 e 15 anos e sete meses, que realizaram o tratamento ortodôntico com o emprego do aparelho pré-ajustado Straight Wire. Para avaliar o comportamento das dimensoes transversais foram mensuradas a largura do arco dentário infe...

  19. MEJORAMIENTO DE LA CALIDAD DEL SERVICIO MEDIANTE LA IMPLEMENTACIÓN DE UN SISTEMA DE GESTIÓN DE CALIDAD EN LA EMPRESA MISTER DENT DEL DISTRITO DE TRUJILLO

    OpenAIRE

    MARIÑO ESQUIVEL, YULIANA ROCÍO

    2016-01-01

    El presente trabajo de investigación se realizó con el objetivo de determinar el mejoramiento de la calidad del servicio mediante la implementación de un sistema de gestión de calidad en la satisfacción del cliente en la Empresa MÍSTER DENT del Distrito de Trujillo / La Libertad. La investigación es un tipo de estudio cuantitativa y experimental. La población estuvo conformada por la calidad del servicio al cliente de la Empresa MÍSTER DENT, por lo que nuestra premuestra y pos muestra fue...

  20. Características bioquímicas e microbiológicas do biofilme dentário formado in situ sobre materiais que contêm flúor ou fosfato de cálcio amorfo

    OpenAIRE

    Ferreira, Lilian [UNESP

    2010-01-01

    Muito tem se avaliado a respeito das propriedades físicas e químicas dos selantes de fóssulas e fissuras, mas pouco sobre seus efeitos no biofilme dentário. O objetivo deste estudo foi analisar as características bioquímicas e microbiológicas do biofilme dentário formado in situ sobre materiais que liberam flúor ou cálcio e fosfato. Dez voluntários utilizaram dispositivo intrabucal palatino contendo corpos-de-prova de materiais (Fuji IX GP, Auralay XF e Aegis) ou blocos de esmalte bovino. A f...

  1. Análise in vitro da presença de infiltração apical em dentes apicectomizados com técnica convencional e com o Laser de Er:YAG

    OpenAIRE

    Marques, Aparecida Maria Cordeiro

    2004-01-01

    110f. O grande número de insucessos na Cirurgia Paraendodôntica está diretamente relacionado à falhas no selamento do remanescente dentário apicectomizado e conseqüente manutenção de um ambiente propício à perpetuação de processos infecciosos. Com intuito de compreender melhor este aspecto, este trabalho tem como objetivo verificar e comparar ?in vitro?, a infiltração apical, através do uso de uma solução evidenciadora de Azul de Metileno a 2%, em dentes apicectomizados pela técnica conven...

  2. Pattern of Smartphones Utilisation among Engineering Undergraduates

    OpenAIRE

    Muliati Sedek

    2014-01-01

    The smartphones ownership among the undergraduates in Malaysia was recorded as high. However, little was known about its utilization patterns, thus, the focus of this research was to determine the utilisation patterns of smartphones based on the National Education Technology Standard for Students (NETS.S) among engineering undergraduates in Malaysia. This study was based on a quantitative research and the population comprised undergraduates from four Malaysian Technical Universities. A total ...

  3. Undergraduate Breakfast, Career Workshop, and Awards

    Science.gov (United States)

    2017-01-01

    Undergraduate students can enjoy a hearty breakfast and learn about how to prepare for a wide variety of careers in physics outside of academia. Topics of this interactive workshop will include planning and self-assessment, inventorying transferable skills, finding out more about career opportunities, and successfully applying for jobs. Immediately following the workshop, top presenters from the Undergraduate Research/SPS sessions will be recognized. All presenters in the undergraduate sessions will receive certificates acknowledging their scientific accomplishments.

  4. Motivation of first semester undergraduate students

    DEFF Research Database (Denmark)

    Schlichter, Bjarne; Sigvardsen, Kari; Jonsson, Sofia

    Purpose - The importance and development of information systems are increasing, so are the need of business students' general understanding of information systems and the function of these in businesses as well as influence on firms’ competitiveness. The aim of this study was to identify first year...... of first semester undergraduate students. Keywords -Motivation; first year undergraduate students; Management Information Systems; teaching assistants. Paper type - Research paper....... undergraduate students’ motivation and commitment towards education regarding management information system, and how student teaching assistants' attitude and qualities influence these factors. The paper is based on a case study of first year undergraduate students taking the course IT in Business as part...

  5. Mophologic Analysis of the teeth and his relation with the slaughter age of buffalos ANÁLISE MORFOLÓGICA DOS DENTES E SUA RELAÇÃO COM A IDADE DE ABATE DE BÚFALOS

    Directory of Open Access Journals (Sweden)

    Francisco Carneiro Lima

    2008-07-01

    Full Text Available t was evaluated to the morphology of the incisors teeth of 100 buffaloes of slaughterhouses in Sao Luiz, seeking to relate them with your age of slaughter. The dental arches of the buffalos were taken to the laboratory of Anatomy/UEMA, for analysis of the incisors teeth. The results showed that the incisors teeth was composed for 4 pair, disposed in semicircle, denominated of 1ts, 2nd, 3rt and 4th pairs of incisors teeth (tweezers, first medium, seconds medium and songs. It was evidenced two teethings, deciduous and definitive, with forms and varied sizes, and variables levels of dental wear and tear, besides the presence of longitudinal grooves in the surface of the deciduous and definitive teeth with coloration varying from brown clear to darkness. With the dental analysis it was possible to distinguish five groups of animals that are depressed in the Maranhão and the group of smaller animals than 2.5 years and larger than 5.5 years were the more frequently observed. After morphologic and chronological evaluation of the incisors teeth of buffaloes, it was conclude that the buffaloes present a dental morphology similar the others ruminants and that, in function of the dental observation, the depressed buffaloes in Maranhão don’t follow pattern defined for discard.

    KEY WORD: Anatomy, buffaloes, teeth, slaughter.

    Avaliou-se a morfologia dos dentes incisivos de cem bubalinos adultos abatidos em matadouros do município de São Luís, Maranhão, visando relacioná-los com a idade de seu abate. Coletaram-se as arcadas dentárias desses animais, as quais foram levadas para o laboratório de Anatomia do Curso de Medicina Veterinária/UEMA, para análise dos dentes incisivos. Os resultados mostraram

  6. Anatomy of an ancient subduction interface at 40 km depth: Insights from P-T-t-d data, and geodynamic implications (Dent Blanche, Western Alps)

    Science.gov (United States)

    Angiboust, Samuel; Glodny, Johannes; Oncken, Onno; Chopin, Christian

    2014-05-01

    An exhumed metamorphic suture zone over 40 km long is exposed in the Dent Blanche Region of the Western Alps belt, along the Swiss-Italian border. In this region, the metasediment-bearing ophiolitic remnants of the Liguro-Piemontese ocean (Tsaté complex) are overthrusted by a continental, km-sized complex (Dent Blanche Tectonic System: DBTS) of Austro-Alpine affinity. The DBTS represents a strongly deformed composite terrane with independent tectonic slices of continental and oceanic origin. In order to better understand the nature and the geodynamic meaning of the shear zone at the base of the DBTS (Dent Blanche Thrust, DBT) we re-evaluated the pressure-temperature-time-deformation (P-T-t-d) history of these two units using modern thermobarometric tools, Rb/Sr deformation ages and field relationships. Our results show that the Tsaté complex is formed by a stack of km-thick calcschists-bearing tectonic slices, having experienced variable maximum burial temperatures of between 360°C and 490°C at depths of ca. 25-40 km, between 41 Ma and 37 Ma. The Arolla gneissic mylonites constituting the base of the DBTS experienced a continuous record of protracted high-pressure (12-14 kbar), top-to-NW D1 deformation at 450-500°C between 43 and 55 Ma. Some of these primary, peak metamorphic fabrics have been sheared (top-to-SE D2) and backfolded during exhumation and collisional overprint (20 km depth, 35-40 Ma) leading to the regional greenschist facies retrogression particularly prominent within Tsaté metasediments. The final juxtaposition of the DBTS with the Tsaté complex occurred between 350 and 500°C during this later, exhumation-related D2 event. Although some exhumation-related deformation partially reworked D1 primary features, we emphasize that the DBT can be viewed as a remnant of the Alpine early Eocene blueschist-facies subduction interface region. The DBT therefore constitutes the deeper equivalent of some shallower portions of the Alpine subduction

  7. Processo de reparo em feridas de extração dentária em camundongos tratados com o complexo Symphytum officinale e Calendula officinallis

    Directory of Open Access Journals (Sweden)

    BALDUCCI-ROSLINDO Eleny

    1999-01-01

    Full Text Available Medicamentos homeopáticos como o Symphytum officinalle e a Calendula officinallis são dotados de propriedades anti-sépticas, antiinflamatória, cicatrizantes e também agem como promotores da consolidação de fraturas ósseas. Neste trabalho, uniram-se esses dois medicamentos similares em um complexo para verificar o seu efeito no reparo em feridas de extração dentária em camundongos. O complexo Symphytum officinalle e Calendula officinallis nas potências de 6CH e 3CH, respectivamente, foi ministrado por via oral ao grupo tratado durante 5 dias antes e após a extração do incisivo superior direito. No grupo controle, administraram-se 5ml de álcool etílico a 70% diluídos em 30 ml de soro fisiológico. Após a proservação, os animais foram sacrificados, a maxila direita separada da esquerda, fixada e processada para inclusão em parafina. Após a microtomia, os cortes obtidos foram corados pela H/E. A análise histológica mostrou que, tanto no grupo controle como no tratado, o alvéolo dentário estava preenchido por tecido de granulação e tecido ósseo neoformado, com graus variáveis de maturação, rico em osteócitos. No entanto, nos animais tratados, o processo de reparo em feridas após extração dentária do incisivo superior direito mostrou um avanço progressivo de neoformação óssea mais acentuado quando comparado ao grupo controle, em tempos equivalentes. Estes resultados enfatizam as propriedades biológicas do complexo Symphytum officinalle e Calendula officinallis e sua possível utilização como recurso terapêutico na Odontologia.

  8. Undergraduate topology a working textbook

    CERN Document Server

    McCluskey, Aisling

    2014-01-01

    This textbook offers an accessible, modern introduction at undergraduate level to an area known variously as general topology, point-set topology or analytic topology with a particular focus on helping students to build theory for themselves. It is the result of several years of the authors' combined university teaching experience stimulated by sustained interest in advanced mathematical thinking and learning, alongside established research careers in analytic topology. Point-set topology is a discipline that needs relatively little background knowledge, but sufficient determination to grasp i

  9. Teaching undergraduate astrophysics with PIRATE

    Science.gov (United States)

    Brodeur, M. S.; Kolb, U.; Minocha, S.; Braithwaite, N.

    2014-12-01

    PIRATE is a 0.43m semi-autonomous research and teaching observatory owned by The Open University, UK. Since 2010, it has been reserved for several months of each year for teaching astronomy in the OU's undergraduate programme. As students in these courses operate PIRATE remotely rather than travelling to the observatory itself, we chose to investigate whether effective learning was adversely affected by the absence of a more traditional `hands on' experience. We discuss student perspectives on the technologies employed (i.e., remote and virtual investigations), the impact these had on perceived course outcomes, and consider implications for future teaching and outreach.

  10. Mechanics problems in undergraduate physics

    CERN Document Server

    Strelkov, S P

    2013-01-01

    Problems in Undergraduate Physics, Volume I: Mechanics focuses on solutions to problems in physics. The book first discusses the fundamental problems in physics. Topics include laws of conservation of momentum and energy; dynamics of a point particle in circular motion; dynamics of a rotating rigid body; hydrostatics and aerostatics; and acoustics. The text also offers information on solutions to problems in physics. Answers to problems in kinematics, statics, gravity, elastic deformations, vibrations, and hydrostatics and aerostatics are discussed. Solutions to problems related to the laws of

  11. Undergraduate Research as Engaged Student Learning

    Science.gov (United States)

    Wolf, Lorraine W.

    2018-01-01

    This chapter discusses the impact of undergraduate research as a form of engaged student learning. It summarizes the gains reported in post-fellowship assessment essays acquired from students participating in the Auburn University Undergraduate Research Fellowship Program. The chapter also discusses the program's efforts to increase opportunities…

  12. Imitation in Undergraduate Teaching and Learning

    Science.gov (United States)

    Zhou, Jiangyuan; Guo, Wei

    2016-01-01

    Research in developmental psychology and neuroscience has demonstrated the critical role of imitation in human learning. Self-report questionnaires collected from 456 undergraduate students in two U.S. institutions and one Chinese institution demonstrated that undergraduate students from both U.S. and Chinese cultures used various imitations in…

  13. Early undergraduate research experience at Makerere University ...

    African Journals Online (AJOL)

    To remain relevant the Faculty of Medicine Makerere University needs to identify research enhancing opportunities like undergraduate research experiences. Methods: This was a cross sectional study involving 424 graduate and undergraduate students of Makerere University Medical School on the traditional curriculum.

  14. Undergraduate Women's Persistence in the Sciences

    Science.gov (United States)

    George-Jackson, Casey E.

    2014-01-01

    This study uses longitudinal data of undergraduate students from five public land-grant universities to better understand undergraduate students' persistence in and switching of majors, with particular attention given to women's participation in science, technology, engineering, and mathematics (STEM) fields. Specifically, the study examines…

  15. Internet Usage and Academic Performance of Undergraduate ...

    African Journals Online (AJOL)

    The study examined the influence of internet usage on academic performance of undergraduate students of the University ofIlorin, Nigeria.This study adopted descriptive survey method. Six faculties were randomly selected from the 13 faculties in the University while 200 undergraduate students were sampled across these ...

  16. Undergraduates Perspectives on Sex Education and Teenage ...

    African Journals Online (AJOL)

    This study examines undergraduates' perspective on sex education and teenage pregnancy in Covenant University, Ota, Ogun State, Nigeria. The study population was 250 undergraduates of Covenant University. Frequency tables, linear regression analysis and analysis of variance were used to analyze the data collected ...

  17. Students' perspectives of undergraduate research methods ...

    African Journals Online (AJOL)

    Introduction: in this study we used a model of adult learning to explore undergraduate students' views on how to improve the teaching of research methods and biostatistics. Methods: this was a secondary analysis of survey data of 600 undergraduate students from three medical schools in Uganda. The analysis looked at ...

  18. Lecturers' Views on Ghana's Undergraduate Mathematics Education

    Science.gov (United States)

    Assuah, Charles; Ayebo, Abraham

    2015-01-01

    This paper synthesizes the views of 6 university lecturers on Ghana's undergraduate mathematics education. These views were expressed during a mathematics workshop sensitization program on the "contribution of undergraduate mathematics education to the Ghanaian economy." The data consisting of open-ended questions followed by…

  19. Social Work Faculty and Undergraduate Research Mentorships

    Science.gov (United States)

    Horner, Pilar S.; Hughes, Anne K.; Vélez Ortiz, Daniel

    2016-01-01

    Social work faculty scholars lead the field as generators of knowledge that integrates investigative studies with practical social welfare outcomes. As such, the faculty potentially offers undergraduate researchers a different way of envisioning research that extends beyond traditional undergraduate research models. To date, however, no research…

  20. Applications of AViz in Undergraduate Education

    Science.gov (United States)

    Adler, J.; Rosen, S.

    Animated visualizations of physical systems can help undergraduate students understand and even enjoy their Physics classes. Preparing such visualizations provides interesting projects for senior undergraduate and graduate students, who learn basic techniques of computer simulation on systems that are relatively easy for them to understand.

  1. Agriculture Undergraduates Preference For Agriculture Disciplines ...

    African Journals Online (AJOL)

    The broad objective of this study research is to investigate the preferences for the different disciplines in agriculture by undergraduate students of Agriculture with a view to understanding the effect on future manpower needs in Nigerian agriculture. Data for the study were collected from 99 randomly selected undergraduate ...

  2. Undergraduate Research in the Dartmouth Economics Department

    Science.gov (United States)

    Feyrer, James

    2017-01-01

    One of the key components to the undergraduate research enterprise at Dartmouth is the recognition that learning to do research requires both directed instruction and learning by doing. The economics faculty have tailored a fruitful undergraduate research program based on this philosophy, and this article describes these efforts while also…

  3. An Undergraduate, Interdisciplinary Program in Gerontology.

    Science.gov (United States)

    Puglisi, J. Thomas

    The program development project described in this report was undertaken at the University of North Carolina at Charlotte to develop faculty expertise and experience in undergraduate teaching in gerontology and to lay the foundation for an interdisciplinary, undergraduate minor in gerontology. Three core courses for the minor in gerontology were…

  4. Research: Clinical undergraduate medical student training at ...

    African Journals Online (AJOL)

    To profile the clinicians at Kimberley Hospital Complex in terms of their knowledge of, skills in and perspectives on the added responsibility of clinical undergraduate medical student training prior to the launch of the proposed undergraduate student rotations. Methods. The study followed a qualitative research design using ...

  5. Joint hypermobility syndrome among undergraduate students | Didia ...

    African Journals Online (AJOL)

    Objective: To assess the prevalence of joint hypermobility syndrome among undergraduate students of the University of Port Harcourt, Nigeria using the Beighton's criteria. Design: Cross- sectional prospective study of 550 randomly selected undergraduate students . Setting: Departments of Anatomy and Human Physiology ...

  6. Prevalence and Severity of Depression among Undergraduate ...

    African Journals Online (AJOL)

    Purpose: To highlight the prevalence and severity of depression among undergraduate students in public and private ... mental health effect of university education on undergraduate students, especially female students. Keywords: Depression ..... Kim YS, Koh YJ, Leventhal B. School bullying and suicidal risk in Korean ...

  7. Journal of Undergraduate Research, Volume VIII, 2008

    Energy Technology Data Exchange (ETDEWEB)

    Stiner, K. S.; Graham, S.; Khan, M.; Dilks, J.; Mayer, D.

    2008-01-01

    Th e Journal of Undergraduate Research (JUR) provides undergraduate interns the opportunity to publish their scientific innovation and to share their passion for education and research with fellow students and scientists. Fields in which these students worked include: Biology; Chemistry; Computer Science; Engineering; Environmental Science; General Sciences; Materials Sciences; Medical and Health Sciences; Nuclear Sciences; Physics; Science Policy; and Waste Management.

  8. Undergraduate Single Mothers' Experiences in Postsecondary Education

    Science.gov (United States)

    Beeler, Sydney

    2016-01-01

    Using Astin's (1993) College Impact Model, this chapter explores the current literature as it relates to single mothers in undergraduate postsecondary education. The chapter looks at the ways that undergraduates who are single mothers are counter to the "ideal-student" norms. Policy and best-practice recommendations conclude the chapter.

  9. Undergraduate Research Mentoring: Obstacles and Opportunities

    Science.gov (United States)

    Johnson, W. Brad; Behling, Laura L.; Miller, Paul; Vandermaas-Peeler, Maureen

    2015-01-01

    Researchers and policy-makers in higher education increasingly espouse the view that undergraduate students should have the opportunity to learn about scholarship and research in the context of faculty-mentored research experiences. There is mounting consensus that mentored undergraduate research should be standard pedagogical practice in all…

  10. A Review of Undergraduate Mentoring Programs

    Science.gov (United States)

    Gershenfeld, Susan

    2014-01-01

    This review summarizes published studies on undergraduate mentoring programs from 2008 to 2012. Twenty studies met the inclusion criteria, which included empirical research on formal mentoring programs with undergraduate students as mentees or mentors. Each study was assessed based on limitations identified in two earlier reviews of the mentoring…

  11. Undergraduate International Studies and Foreign Language Program

    Science.gov (United States)

    Office of Postsecondary Education, US Department of Education, 2012

    2012-01-01

    The Undergraduate International Studies and Foreign Language Program provides funds to institutions of higher education, a consortia of such institutions, or partnerships between nonprofit organizations and institutions of higher education to plan, develop, and implement programs that strengthen and improve undergraduate instruction in…

  12. Causes of Sexual Promiscuity Among Female Undergraduate ...

    African Journals Online (AJOL)

    This study investigated causes of sexual promiscuity among female undergraduate students in university of Lagos. The sample comprised 150 female undergraduate students randomly selected from all the five female hostels in University of Lagos. A researcher-constructed questionnaire was administered to test the three ...

  13. Reliability Estimates for Undergraduate Grade Point Average

    Science.gov (United States)

    Westrick, Paul A.

    2017-01-01

    Undergraduate grade point average (GPA) is a commonly employed measure in educational research, serving as a criterion or as a predictor depending on the research question. Over the decades, researchers have used a variety of reliability coefficients to estimate the reliability of undergraduate GPA, which suggests that there has been no consensus…

  14. Electrochemistry "Discovery" Course for Undergraduates

    Science.gov (United States)

    May, Michael Alan; Gupta, Vijay K.

    1997-07-01

    We developed a chemistry selected topics course at Central State University, "Introduction to Laboratory Techniques in Electrochemistry" to: (1) give undergraduates hands-on experience with electrochemical measurements, (2) prepare students for summer research in Fuel Cell and Battery technology. Since students "learn by doing", the course is suitable for undergraduates from sophomore to senior levels. Students complete 6 laboratories, based on a "less is more" philosophy which emphasizes analytic and creative process rather than mandatory topical coverage. Eight electrochemical experiments are available: Construction of Zinc-Copper battery stacks, Lead Acid Battery discharge-charge cycles, Conductimetric titration of aspirin with Ammonium Hydroxide, Ion Selective Electrode determination of Fluoride in water, Cyclic Voltammetry of Potassium Ferricyanide solution, Cyclic Voltammetry of Sulfuric acid on Platinum working electrode, Anodic Stripping Voltammetry of Lead ion in solution, Differential Pulse Polarography of Lead ion in solution. Topics discussed in lecture include: chemical definitions, electrical definitions, Oxidation-Reduction reactions, Electrochemical series, Electrodes, Electrochemical Cells, direct Coulometry, electrolysis, electrochemical process efficiency, equilibrium Potentiometry, real Cell Voltages, Ion Selective Electrode types and designs, reference electrode designs, working electrode materials, pH buffers, Cyclic Voltammetry, Anodic Stripping Voltammetry, Polarography, differential pulse Polarography, and simple electrochemical instrumentation circuits.

  15. Caracterização de revestimentos de nitreto de titânio para implantes dentários e aditamentos protéticos

    OpenAIRE

    Neves, Patrícia Domingues Prior

    2017-01-01

    Dissertação para obtenção do grau de Mestre no Instituto Superior de Ciências da Saúde Egas Moniz Introdução: O titânio é conhecido pelas excelentes características como biocompatibilidade, resistência à corrosão, baixa citotoxicidade e por potenciar a osteointegração, sendo o biomaterial de eleição para implantes dentários. Apesar das distintas características têm sido mencionadas algumas limitações. Neste contexto, o nitreto de titânio afigura-se um substituto promissor, respondendo com ...

  16. Cárie dentária e flúor: uma relação do século XX

    OpenAIRE

    Narvai,Paulo Capel

    2000-01-01

    No início do século XX a cárie dentária era um problema de saúde pública, na maior parte do planeta. As populações conviviam com infecção, dor, sofrimento e mutilação. A descoberta do efeito preventivo do flúor o transformou, ao longo do século, no principal agente utilizado no enfrentamento da doença em todo o mundo. Em vários países e também no Brasil produtos fluorados têm sido apontados como os principais responsáveis pelo declínio observado na prevalência da cárie. No Brasil, estudos pio...

  17. O uso do ultra-som na movimentação dentária induzida The use of ultrasound in induced dental movement

    Directory of Open Access Journals (Sweden)

    Marcos Gabriel do Lago Prieto

    2005-10-01

    Full Text Available Este trabalho teve por objetivo avaliar histologicamente o mecanismo de remodelação do periodonto de sustentação dos dentes caninos de cães adultos jovens, sob aplicação de forças ortodônticas com e sem a utilização do ultra-som. Oito cães sem raça definida, de ambos os gêneros, com 1 a 2 anos de idade, pesando de 10 a 15 Kg, receberam uma força de 150g estabelecida por uma mola superelástica, colocada por mesial do primeiro molar superior direito e tracionada até a face distal do canino superior direito. O grupo controle foi constituído por 4 animais e os demais representaram o grupo experimental. Estimulações de ultra-som foram aplicadas nos animais do grupo experimental, durante 20 minutos diários, sobre a região de movimentação dentária, com 200 microssegundos de largura de pulso e 1.000Hz de freqüência de repetição de pulso. Um animal de cada grupo foi sacrificado nos períodos de 7, 14, 21 e 28 dias. Os hemiarcos dentários foram removidos, fixados em solução de Bouin e foram obtidos cortes histológicos com coloração de Hematoxilina e Eosina e Tricrômico de Masson para análise de microscopia óptica. Os aspectos histológicos mostraram-se diferentes entre os dois grupos, sendo que os animais estimulados pelo ultra-som responderam com intensa neoformação vascular e celular no LP e osso alveolar, apresentando maior organização nas fibras colágenas e regularização dos tecidos mineralizados. Estes resultados sugerem que o ultra-som pode ser indicado na estabilização dos dentes de ancoragem, estimulando a neoformação óssea mais rápida em pacientes submetidos à cirurgia ortognática.The purpose of the present study was to evaluate differences in the mechanism of periodontium remodeling of canine teeth of young adult dogs subjected to orthodontic forces with and without the use of ultrasound stimulation. Eight dogs of both sexes, of undefined breed, aged 1-2 years and weighing 10-15kg were

  18. Contribuição para o estudo dos factores de risco de lesões de reabsorção dentária no gato

    OpenAIRE

    Correia, Rita Alexandra Martins

    2017-01-01

    Dissertação de Mestrado Integrado em Medicina Veterinária A reabsorção dentária (RD) é a doença dental mais reportada em gatos domésticos, 75% de todos os gatos desenvolvem pelo menos uma lesão de RD durante a sua vida. A etiologia e factores de risco são desconhecidos, no entanto, vários factores foram considerados determinantes na etiopatogenia de RD, nomeadamente: inflamação oral; doença viral; doenças metabólicas e endócrinas; acidose sistémica; via da vitamina D e regul...

  19. Microbiological evaluation of bristles of frequently used toothbrushes Avaliação microbiológica das cerdas de escovas dentárias de uso frequente

    Directory of Open Access Journals (Sweden)

    Celso André Ferreira

    2012-08-01

    Full Text Available INTRODUCTION: Brushing teeth is probably the practice of oral hygiene most common in the world; however, inadequate use can become a risk to the population health, once they may be contaminated with various microorganisms. OBJECTIVE: The aim of this study was to evaluate the bacterial contamination on toothbrush bristles using different methodologies. METHOD: We used 40 toothbrushes from healthy individuals aged 3 to 58 years. The samples were grown in test tubes containing trypticase soy broth sterile, and with the help of a tracking 0.1 μl samples were placed on plates containing sheep blood agar 5% and MacConkey agar then the samples were stored in a bacteriological incubator at 37°C for 24 hours for later analysis. It was counted the colony forming units and bacteria identification present in the brush. RESULTS: On the microbiological analysis, there was a growth of Escherichia coli, Klebsiella pneumoniae, Streptococcus pyogenes and Staphylococcus coagulase negative. CONCLUSION: According to the results presented in this study, we observed a high incidence of bacterial contamination in the brushes analyzed. The most frequent microorganisms were members of the Enterobacteriaceae. The usage time of toothbrushes may be related to contamination found and, therefore, not only good hygiene ensures the reduction of microbial load, but replacing the toothbrush can also ensure individuals better oral health.INTRODUÇÃO: a escovação de dentes é, provavelmente, a prática de higiene bucal mais comumente realizada no mundo; entretanto, o acondicionamento inadequado pode se transformar em um risco para a saúde da população, uma vez que podem estar contaminadas com vários tipos de microrganismos. OBJETIVO: o objetivo desse estudo foi avaliar a contaminação bacteriana de cerdas de escovas dentais através de diferentes métodos. MÉTODOS: foram utilizadas 40 escovas de dentes provenientes de indivíduos sadios, com idade entre 3 a 58 anos. As

  20. Efeitos de um medicamento antiasmático potencialmente erosivo no esmalte e dentina de dentes decíduos: estudo in situ

    OpenAIRE

    Camila Scatena

    2014-01-01

    O uso prolongado de medicamentos ácidos na cavidade bucal de crianças com desordens crônicas causam preocupação, devido ao risco de erosão dental. O objetivo deste estudo foi avaliar, in situ, o efeito de um medicamento antiasmático de uso prolongado (Sulfato de Salbutamol) no esmalte e dentina de dentes decíduos. Molares decíduos foram seccionados, de forma a obter fragmentos de esmalte e de dentina (3 x 3 x 2 mm) da porção coronária. Os espécimes foram esterilizados, incluídos em resina epó...

  1. Plano de comunicação integrada de marketing : Arcos Médica Centro Médico e Dentário

    OpenAIRE

    Cardoso, Joana Boaventura Sousa

    2012-01-01

    Mestrado em Marketing Este trabalho de projecto é um Plano de Comunicação Integrada de Marketing para a empresa Arcos Médica Centro Médico e Dentário e para a sua realização, adoptou-se o modelo conceptual de Clow e Baack (2004). Os objectivos do plano são: (1) aumentar a notoriedade e fortalecer a imagem da empresa, (2) estimular a repetição de compra dos serviços da organização, (3) reforçar as decisões de compra, assim como a marca no sector de saúde oral em Portugal e (4) atrair potenc...

  2. Desenvolvimento e caracterização de cerâmicas para fabricação de próteses dentárias

    OpenAIRE

    Bezerra Ramos Filho, Fernando

    2008-01-01

    Atualmente, as qualidades dos produtos e do processamento têm vital importância em quase todos os setores econômicos em nossa sociedade. O desenvolvimento e caracterização de cerâmica para fabricação de próteses dentária vêm sendo buscados através de vários trabalhos ao longo da história. As cerâmicas odontológicas podem consistir principalmente em vidros, porcelanas, cerâmicas vítreas ou estruturas cristalinas. Elas possuem propriedades químicas, mecânicas, físicas e térmic...

  3. Desnutrição energético-protéica e cárie dentária na primeira infância

    OpenAIRE

    Costa,Dijane Pereira; Mota,Ana Catarina de Miranda; Bruno,Glaucenira de Barros; Almeida,Maria Eneide Leitão de; Fonteles,Cristiane Sá Roriz

    2010-01-01

    Este estudo tem por objetivo investigar a relação existente entre a desnutrição energético-protéica e a cárie dentária precoce na primeira infância. Trata-se de uma comunicação, para a qual foi realizada uma revisão da literatura, a partir de análise documental de produção bibliográfica, baseada em levantamentos de periódicos e consultas a livros. Verificou-se que a cárie precoce na infância é altamente prevalente nas comunidades de baixa renda, nas quais a desnutrição é um fator comum e de g...

  4. Undergraduate Laboratory for Surface Science

    Science.gov (United States)

    Okumura, Mitchio; Beauchamp, Jesse L.; Dickert, Jeffrey M.; Essy, Blair R.; Claypool, Christopher L.

    1996-02-01

    Surface science has developed into a multidisciplinary field of research with applications ranging from heterogeneous catalysis to semiconductor etching (1). Aspects of surface chemistry are now included in physical chemistry textbooks (2) and undergraduate curricula (3), but the perceived cost and complexity of equipment has deterred the introduction of surface science methods in undergraduate laboratories (4). Efforts to expose chemistry undergraduates to state-of-the-art surface instrumentation have just begun (5). To provide our undergraduates with hands-on experience in using standard techniques for characterizing surface morphology, adsorbates, kinetics, and reaction mechanisms, we have developed a set of surface science experiments for our physical chemistry laboratory sequence. The centerpiece of the laboratory is an ultrahigh vacuum (UHV) chamber for studies of single crystal surfaces. This instrument, shown in the figure, has surface analysis capabilities including low energy electron diffraction (LEED), Auger spectroscopy, and temperature-programmed desorption (TPD). The laboratory exercises involve experiments on the well-studied Pt(111) surface. Students prepare a previously mounted single crystal sample by sputtering it with an argon ion gun and heating it under O2. Electron diffraction patterns from the cleaned surface are then obtained with a reverse view LEED apparatus (Princeton Instruments). Images are captured by a charge-coupled device (CCD) camera interfaced to a personal computer for easy downloading and subsequent analysis. Although the LEED images from a Pt(111) surface can be readily interpreted using simple diffraction arguments, this lab provides an excellent context for introducing Miller indices and reciprocal lattices (6). The surface chemical composition can be investigated by Auger spectroscopy, using the LEED apparatus as a simple energy analyzer. The temperature programmed desorption experiment, which is nearly complete, will be

  5. Validade da autopercepção da presença de cárie dentária como teste diagnóstico e fatores associados entre adultos

    Directory of Open Access Journals (Sweden)

    Desirée Sant’Ana Haikal

    2017-08-01

    Full Text Available Resumo: Objetivou-se investigar a validade da autopercepção da presença da cárie dentária e fatores associados, mediante estudo com 795 adultos (35-44 anos. A variável dependente foi autopercepção da presença da cárie dentária, as independentes reunidas em blocos. Três modelos logísticos foram conduzidos: (1 todos os adultos; (2 adultos com lesões de cárie normativa; e (3 adultos sem tais lesões. A autopercepção da presença da cárie dentária apresentou sensibilidade de 77,7%, especificidade de 58%, acurácia de 65%, valor preditivo positivo de 52% e valor preditivo negativo de 81%. No Modelo 1, a autopercepção da presença da cárie dentária foi associada ao tempo de uso dos serviços odontológicos, acesso à informação, uso de fio dental, lesões normativas, percepção da necessidade de tratamento, dor, insatisfação com a saúde bucal e geral. No Modelo 2, a autopercepção da presença da cárie dentária foi associada ao tempo de uso dos serviços odontológicos, percepção da necessidade de tratamento e insatisfação com a saúde bucal e geral. No Modelo 3, autopercepção da presença da cárie dentária foi associada ao tempo de uso dos serviços odontológicos, acesso à informação, percepção da necessidade de tratamento, insatisfação com a saúde bucal e uso de fio dental. A autopercepção da presença da cárie dentária mostrou utilidade limitada como método de diagnóstico.

  6. Necessidade e alocação de laboratórios regionais de prótese dentária no Brasil: um estudo exploratório

    Directory of Open Access Journals (Sweden)

    Violeta Rodrigues Aguiar

    2015-10-01

    Full Text Available ResumoObjetivou-se comparar os indicadores epidemiológicos e de necessidade de reabilitação protética de 2003 com o número de Laboratórios Regionais de Prótese Dentária (LRPD e Técnicos em Prótese Dentária (TPD, nas cinco regiões brasileiras, entre 2012 e 2013. Os dados sobre os serviços de saúde foram obtidos no DATASUS e os epidemiológicos a partir SBBrasil 2003. As taxas de próteses dentárias produzidas, de LRPD e de TPD foram calculadas por 100.000 habitantes. Para a análise, utilizaram-se os testes de Kruskal-Wallis e Qui-quadrado. A prevalência de edentulismo, ajustada por sexo e idade variaram entre as regiões (p < 0,01, sendo maior na região Sudeste (13,9%. O maior número médio de dentes perdidos foi encontrado na região Norte (10,3 dentes. A maior disponibilidade de LRPD (1,16 por 100 mil/hab e TPD (1,05 por 100 mil/hab ocorreu na região Nordeste. A maior necessidade de prótese total (7,2% foi registrada no Norte, mas a mesma foi a mais baixa na entrega de próteses (9,71 por 100 mil/hab. Houve diferença estatisticamente significativa (p < 0,01 entre as regiões, para taxas de LRPD, TPD e de próteses. Sugere-se que outros critérios além dos epidemiológicos, influenciaram na abertura de LRPD no país.

  7. Enhancing undergraduate students’ communications skills

    DEFF Research Database (Denmark)

    Jørgensen, Merete; Witt, Klaus; Fridorff-Jens, Peter Kindt

    2014-01-01

    19729 Abstract Title: Enhancing undergraduate students communications skills Abstract Authors: •Merete Jorgensen, Copenhagen University , Family Medicine , Copenhagen •Klaus Witt, Research Unit , Family Medicine , Copenhagen •Peter Kindt Fridorff-Jens, Copenhagen University , IT-unit , Copenhagen...... the Consultation Logic (CL) and Consultation Analysis (CA), based on the Patient-Centred Consultation. To investigate the effect of various teaching methods in communication skills we have developed a scientific tool (DanSCORE) based on CL and CA to measure the students analysing ability Summary of work It has...... and they alternate with five plus four hour’s sessions of assessing, analyzing and discussion the videos in small groups with a peer (university teacher) and fellow students.We focus in our project on communication skills. 600 medical students are enrolled in the project. Changes in analyzing ability...

  8. Enhancing undergraduate students’ communications skills

    DEFF Research Database (Denmark)

    Jørgensen, Merete; Witt, Klaus; Fridorff-Jens, Peter Kindt

    2014-01-01

    ,Monika Bullinger,Matthias Rose, Sylke Andreas.Enhancing medical students' communication skills: development and evaluation of an undergraduate training program.Published online 2012 March 24. doi: 10.1186/1472-6920-12-16 2.William T. Branch, Jr, MD; David Kern, MD; Paul Haidet, MD, MPH; Peter Weissmann, MD...... Abstract Presenter(s): •Merete Jorgensen, Copenhagen University , Family Medicine , Øster Farigmagsgade 5 , 1014 , K , Denmark , mejor@sund.ku.dk Abstract: Background Being teachers in Clinical Course of Family Medicine since 1995, we have developed two schemes for communication analysing purposes called...... and they alternate with five plus four hour’s sessions of assessing, analyzing and discussion the videos in small groups with a peer (university teacher) and fellow students.We focus in our project on communication skills. 600 medical students are enrolled in the project. Changes in analyzing ability...

  9. Astronomical Data in Undergraduate courses

    Science.gov (United States)

    Clarkson, William I.; Swift, Carrie; Hughes, Kelli; Burke, Christopher J. F.; Burgess, Colin C.; Elrod, Aunna V.; Howard, Brittany; Stahl, Lucas; Matzke, David; Bord, Donald J.

    2016-06-01

    We present status and plans for our ongoing efforts to develop data analysis and problem-solving skills through Undergraduate Astronomy instruction. While our initiatives were developed with UM-Dearborn’s student body primarily in mind, they should be applicable for a wide range of institution and of student demographics. We focus here on two strands of our effort.Firstly, students in our Introductory Astronomy (ASTR 130) general-education course now perform several “Data Investigations”, in which they interrogate the Hubble Legacy Archive to illustrate important course concepts. This was motivated in part by the realization that typical public data archives now include tools to interrogate the observations that are sufficiently accessible that introductory astronomy students can use them to perform real science, albeit mostly at a descriptive level. We are continuing to refine these investigations, and, most importantly, to critically assess their effectiveness in terms of the student learning outcomes we wish to achieve. This work is supported by grant HST-EO-13758, provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS 5-26555.Secondly, at the advanced-undergraduate level, students taking courses in our Astronomy minor are encouraged to gain early experience in techniques of astronomical observation and analysis that are used by professionals. We present two example projects from the Fall 2015 iteration of our upper-division course ASTR330 (The Cosmic Distance Ladder), one involving Solar System measurements, the second producing calibrated aperture photometry. For both projects students conducted, analysed, and interpreted observations using our 0.4m campus telescope, and used many of the same analysis tools as professional astronomers. This work is supported partly from a Research Initiation and Seed grant from the

  10. Near-peer mentorship for undergraduate training in Ugandan medical schools: views of undergraduate students.

    Science.gov (United States)

    Rukundo, Godfrey Zari; Burani, Aluonzi; Kasozi, Jannat; Kirimuhuzya, Claude; Odongo, Charles; Mwesigwa, Catherine; Byona, Wycliff; Kiguli, Sarah

    2016-01-01

    Masters Students are major stakeholders in undergraduate medical education but their contribution has not been documented in Uganda. The aim of the study was to explore and document views and experiences of undergraduate students regarding the role of masters students as educators in four Ugandan medical schools. This was a cross-sectional descriptive study using qualitative data collection methods. Eight Focus Group Discussions were conducted among eighty one selected preclinical and clinical students in the consortium of four Ugandan medical schools: Mbarara University of Science and Technology, Makerere College of Health Sciences, Gulu University and Kampala International University, Western Campus. Data analysis was done using thematic analysis. Participants' privacy and confidentiality were respected and participant identifiers were not included in data analysis. Undergraduate students from all the medical schools viewed the involvement of master's students as very important. Frequent contact between masters and undergraduate students was reported as an important factor in undergraduate students' motivation and learning. Despite the useful contribution, master' students face numerous challenges like heavy workload and conflicting priorities. According to undergraduate students in Ugandan medical schools, involvement of master's students in the teaching and learning of undergraduate students is both useful and challenging to masters and undergraduate students. Masters students provide peer mentorship to the undergraduate students. The senior educators are still needed to do their work and also to support the master's students in their teaching role.

  11. Fluid Flow Experiment for Undergraduate Laboratory.

    Science.gov (United States)

    Vilimpochapornkul, Viroj; Obot, Nsima T.

    1986-01-01

    The undergraduate fluid mechanics laboratory at Clarkson University consists of three experiments: mixing; drag measurements; and fluid flow and pressure drop measurements. The latter experiment is described, considering equipment needed, procedures used, and typical results obtained. (JN)

  12. Introducing Undergraduates to a Research Laboratory

    Science.gov (United States)

    Weinberg, Robert

    1974-01-01

    Discusses a student project which is intended to teach undergraduates concepts and techniques of nuclear physics, experimental methods used in particle detection, and provide experience in a functioning research environment. Included are detailed procedures for carrying out the project. (CC)

  13. Undergraduate Attitudes Towards Birth Control: New Perspectives

    Science.gov (United States)

    Scarlett, John A.

    1972-01-01

    This study indicates that a great majority of undergraduate college students are aware of the population crisis confronting them and are prepared to deal with it by limiting their families by using contraceptive techniques. (Author)

  14. Undergraduate Summer Fellowships in Breast Cancer Research

    National Research Council Canada - National Science Library

    Brooks, Sam

    2004-01-01

    .... The intent of this application is to broaden the number of students that can participate in KCI's undergraduate summer training program by creating a focused program utilizing the established Breast...

  15. Undergraduate Summer Fellowships in Breast Cancer Research

    National Research Council Canada - National Science Library

    Brooks, Samuel

    2003-01-01

    .... The intent of this application is to broaden the number of students that can participate in KCI's undergraduate summer training program by creating a focused program utilizing the established Breast...

  16. IISc Undergraduate Programme: Admissions for 2013

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 18; Issue 2. IISc Undergraduate Programme: Admissions for 2013. Information and Announcements Volume 18 Issue 2 February 2013 pp 200-200. Fulltext. Click here to view fulltext PDF. Permanent link:

  17. Undergraduate Summer Fellowships in Breast Cancer Research

    National Research Council Canada - National Science Library

    Brooks, Samuel C

    2005-01-01

    .... The intent of this program is to broaden the number of students that can participate in KCI's undergraduate summer training endeavor by creating a focused effort utilizing the established Breast...

  18. Summer Undergraduate Breast Cancer Research Program

    National Research Council Canada - National Science Library

    Folk, William R; Blockus, Linda

    2004-01-01

    ... opportunities, preparing for graduate school, and ethics. The 4 SUBCRP students joined the activities of the MU's Life Sciences Undergraduate Research Opportunities Program, including 80 other students involved in a wide variety of research experiences...

  19. Summer Undergraduate Breast Cancer Research Program

    National Research Council Canada - National Science Library

    Folk, William

    2003-01-01

    ... opportunities, preparing for graduate school, and ethics. The 6 SUBCRP students joined the activities of the MU's Life Sciences Undergraduate Research Opportunities Program, including 70 other students involved in a wide variety of research experiences...

  20. Immediate field of intervention: undergraduate college Preparation ...

    Indian Academy of Sciences (India)

    ... field of intervention: undergraduate college Preparation: at research institutes and universities The challenge: to transform the disciplines themselves Make them relevant and responsive. First step: create innovative interactions across the higher education spectrum, between Research Institute-University-College.

  1. Applicability and fairness of the oral examination in undergraduate ...

    African Journals Online (AJOL)

    OSC(P)Es vary in length and scoring is done with a task specific checklist or a combination of checklists and rating scales. Studies exploring the link between OSCE and student performance ... have shown that they could induce anxiety and that the level of anxiety does not ..... methods in dental education. Eur J Dent Educ ...

  2. ESTUDO DA RETENÇÃO ENTRE RESINA ACRÍLICA PARA BASE DE DENTADURA E DENTES DE RESINA ACRÍLICA TENSILE BOND STRENGTH BETWEEN DENTURE BASE ACRYLIC RESIN AND ACRYLIC RESIN TEETH

    Directory of Open Access Journals (Sweden)

    Renato Salviato FAJARDO

    1997-04-01

    Full Text Available Foi avaliada a resistência de união entre dentes e base de dentadura, ambos de resina acrílica. Os dentes foram incluídos em blocos cilíndricos de resina e, posteriormente, torneados, para se obterem cilindros de 5mm de diâmetro. Sobre a extremidade do dente, era adaptado um padrão de cera de mesmo diâmetro, que, após inclusão na mufla, era substituído por resina acrílica termicamente ativada pelo método de processamento convencional de base de dentadura. Como variáveis, usaram-se duas marcas de dentes, duas fases de inclusão (plástica e borrachóide e aplicação ou não de detergente e monômero sobre os dentes. Os corpos-de-prova, antes dos ensaios de ruptura por tração, foram armazenados em água destilada, a 37ºC, por 2 semanas. Os resultados mostraram que: marca de dente e fase de condensação não influíram nos resultados; somente o uso de detergente ou de monômero aumenta a retentividade e o seu uso conjunto apresenta efeito acumulativo.An investigation was carried out to evaluate the bonding strength between acrylic teeth and heat-cured denture acrylic resin. The teeth were fixed in resin blocks and lathe milled to a cylinder shape of 5 mm of diameter. A wax pattern with the same diameter was adapted on the top of the cylinder and then invested in a flask. Following the conventional denture base resin procedures, the wax pattern was eliminated and heat-cured resin was packed. The variables were: two acrylic teeth brands; two resin phases (full dough and rubber; cleaning or not of the flask with detergent; application or not of monomer over the teeth before resin packing. After polymerization specimens were stored in water at 37ºC, for 2 weeks. Tests were performed by tensile loads. The results showed that teeth brands and resin phases did not influence data; the use of monomer or detergent increased strengths, and when used together the effects were cumulative.

  3. Cisto dentígero: relação entre imagem radiográfica do espaço pericoronário e laudo histopatológico em terceiros molares inclusos

    Directory of Open Access Journals (Sweden)

    Marileia Alves

    2015-02-01

    Full Text Available Justificativa: O Cisto Dentígero é uma patologia benigna que se origina pela separação do folículo da coroa de um dente incluso, sendo o tipo mais comum de cisto odontogênico de desenvolvimento. Objetivo: O objetivo deste trabalho foi verificar a relação entre o espaço pericoronário e laudo histopatológico, através de exames radiográficos e histopatológicos dos folículos no diagnóstico de cisto dentígero em terceiros molares inclusos, de pacientes do Curso de Atualização em Cirurgia Oral Menor no Centro de Estudos Odontológicos Meridional – CEOM (Passo Fundo, RS-BR. Metodologia: Foram analisados 18 laudos histopatológicos e radiografias panorâmicas de pacientes submetidos à exodontia de terceiros molares inclusos. Foi realizada mensuração das imagens radiolúcidas pericoronárias no exame radiográfico, utilizando como parâmetros medidas iguais ou superiores a 2,5 mm. Resultados: Os resultados mostraram que 11,11% da amostra foram diagnosticados como cisto dentígero. O gênero feminino foi o mais afetado (83% e foi predominante em pacientes da cor branca (100%. Os dois casos diagnosticados como cisto dentígero foram mais prevalentes entre a segunda e a terceira década de vida. Conclusão: Concluiu-se que a medida de 2,5 mm para o halo radiolúcido foi pouco significativa para o diagnóstico de cisto dentígero. Para o diagnóstico diferencial devem ser analisados dados clínicos, histopatológicos e radiográficos, sendo necessários outros estudos, com um maior número de amostras para um resultado mais preciso.

  4. Central and peripheral nervous complications of dental treatment Complicações de tratamento dentário afetando o sistema nervoso

    Directory of Open Access Journals (Sweden)

    Eva Olovsson Rossitti

    1995-09-01

    Full Text Available This review outlines the complications involving the central or peripheral nervous system arising from dental procedures reported in the last decade. By far the commonest complications were related to intraoperative mechanical peripheral nerve injury. Trauma to branches of the mandibular nerve occuring during oral operations may potentially result in varying degrees of hypoesthesia, paresthesia, dysesthesia or in chronic pain syndromes. An increase in malpractice suits related to such a complication has been recognized in the late years. A warning of the possibility of occurrence of this complication should to be given to all patients undergoing risky procedures as part of the process of obtaining informed consent to operation. Mandibular third molar extraction seems to be alone the most hazardous procedure related to mechanical nerve injuries and also with anesthesiological accidents. Severe but rather infrequent infectious (meningitis, brain abscess and cavernous sinus thrombophlebitis and anesthesiological complications (occular and facial palsies, optic nerve injury and complications related to general anesthesia were also reported in this period.Complicações, ou eventos inesperados e indesejáveis associados a terapia de uma dada condição, podem ser particularmente incapacitantes quando afetam o sistema nervoso. A proximidade de cavidade craniana e a rica inervação dos tecidos orais representam risco potencialmente alto de disseminação de infecções para o sistema nervoso central e de lesões de troncos nervosos em procedimentos dentários. Em vista do aumento da ocorrência de processos para compensação financeira após tais complicações, é provável que parcela considerável desses pacientes venham a ser examinados por neurologistas. As complicações de tratamento dentário afetando o sistema nervoso central e periférico referidas na literatura (1982-1994 são tema desta revisão. As complicações mais comuns foram as les

  5. Analyzing the Existing Undergraduate Engineering Leadership Skills

    OpenAIRE

    Hamed M. Almalki; Luis Rabelo; Charles Davis; Hammad Usmani; Debra Hollister; Alfonso Sarmiento

    2016-01-01

    Purpose: Studying and analyzing the undergraduate engineering students' leadership skills to discover their potential leadership strengths and weaknesses. This study will unveil potential ways to enhance the ways we teach engineering leadership. The research has great insights that might assist engineering programs to improve curricula for the purpose of better engineering preparation to meet industry's demands. Methodology and Findings: 441 undergraduate engineering students have been s...

  6. Personality and career decision making in undergraduates

    OpenAIRE

    Cabrera, Lidia; Bethencourt, José-Tomás

    2011-01-01

    The relationships between personality and career decision making in undergraduates are analyzed in this work. The hypothesis is that efficient personality is associated with the more mature process of career decision making. For this hypothesis, the Questionnaire of Efficient Personality and the Inventory of Career Factors was administered to 497 students in their final year of undergraduate school. The collected data was put under factorial analysis, analysis of differences of averages, and ...

  7. Argumentation in undergraduate chemistry laboratories

    Science.gov (United States)

    Walker, Joi Phelps

    To address the need for reform in undergraduate science education a new instructional model called Argument-Driven Inquiry (ADI) was developed and then implemented in a undergraduate chemistry course at a community college in the southeastern United States (Sampson, Walker, & Grooms, 2009; Walker, Sampson, & Zimmerman, in press). The ADI instructional model is designed to give a more central place to argumentation and the role of argument in the social construction of scientific knowledge. This research investigated the growth in the quality of the student generated arguments and the scientific argumentation that took place over the course of a semester. Students enrolled in two sections of General Chemistry I laboratory at the community college participated in this study. The students worked in collaborative groups of three or four. The students were given a variation of the same performance task three times during the semester in order to measure individual ability to use evidence and justify their choice of evidence with appropriate rationale. Five ADI investigations took place during the semester and the laboratory reports for each were collected from each student and the argument section of each report was scored. All the student groups were video recorded five times during the semester as they generated and evaluated arguments and the quality of the group argumentation was assessed using an instrument called the Assessment of Scientific Argumentation in the Classroom (ASAC) observation protocol. As time was the independent variable in this study a repeated measure ANOVA was used to evaluate the significance of student improvement in each area (argumentation, written argument and performance task) over the course of the semester (Trochim, 1999). In addition, a multiple regression analysis was conducted to evaluate how well the ASAC scores predicted individual scores on both the performance task and the written arguments (Green & Salkind, 2005). There was

  8. Undergraduate study in psychology: Curriculum and assessment.

    Science.gov (United States)

    Norcross, John C; Hailstorks, Robin; Aiken, Leona S; Pfund, Rory A; Stamm, Karen E; Christidis, Peggy

    2016-01-01

    The undergraduate curriculum in psychology profoundly reflects and shapes the discipline. Yet, reliable information on the undergraduate psychology curriculum has been difficult to acquire due to insufficient research carried out on unrepresentative program samples with disparate methods. In 2014, APA launched the first systematic effort in a decade to gather national data on the psychology major and program outcomes. We surveyed a stratified random sample of department chairs/coordinators of accredited colleges and universities in the United States that offer undergraduate courses and programs in psychology. A total of 439 undergraduate psychology programs (45.2%) completed the survey. This article summarizes, for both associate and baccalaureate programs, the results of the Undergraduate Study in Psychology. Current practices concerning the introductory course, the courses offered, core requirements, the psychology minor, and tracks/concentrations are presented. The frequency of formal program reviews and program-level assessment methods are also addressed. By extending prior research on the undergraduate curriculum, we chronicle longitudinal changes in the psychology major over the past 20 years. (c) 2016 APA, all rights reserved).

  9. Presentación clínica atípica de un quiste dentígero Atypical clinical presentation of a dentigerous cyst

    Directory of Open Access Journals (Sweden)

    Denia Morales Navarro

    2009-12-01

    Full Text Available Los quistes dentígeros suelen ser, en la mayor parte de los casos, un hallazgo casual; por lo general se descubren al investigar la no erupción de un diente permanente. Ocupan el segundo lugar en frecuencia de aparición en los maxilares después del quiste radicular. Cuando el seno maxilar es invadido por estos quistes los síntomas usualmente aparecen tardíos en el proceso. Estos pueden incluir dolor facial, parestesia como consecuencia de la presión sobre un nervio, dolor de cabeza, trismo, trastornos de la gustación y congestión nasal. Por lo infrecuente de la localización maxilar y la corta edad de la paciente nos vimos motivados a revisar lo más reciente de la bibliografía que aborda este tema y a presentar el caso clínico de una paciente femenina de 17 años que fue diagnosticada y tratada por presentar un quiste dentígero en dicha ubicación. Se enfatiza en la importancia del correcto diagnóstico y el establecimiento de una terapéutica concordante en cada caso.Dentigerous cysts are a casual finding in most of cases, in general discovered in investigation of a not eruption of permanent tooth. These occupy the second place in appearance frequency in maxillaries after radicular cyst. When maxillary sinus is invaded by these cysts, symptoms usually appear late in the process. These could include facial pain, paresthesia as consequence of pressure on nerve, headache, trismus, taste disorders and nasal congestion. Due the infrequent of the maxillary location and the short age of patient we reviewed the more recent of bibliography on this subject and to present the clinical case of other female patient aged 17 diagnosed with and treated by dentigerous cyst in such location, emphasizing on the significance of a appropriate diagnosis and establishment of a therapy in accord in each case

  10. Sleep habits in Nigerian undergraduates.

    Science.gov (United States)

    Oluwole, O S A

    2010-01-01

    Quantity of night sleep is shorter than 8 h in several developed countries, but similar data is not available for most African countries. The objective of this study was to describe the quantity of night sleep, factors that are associated with non-restorative sleep, and sleep habits in a population of undergraduates in Nigeria. Questionnaires were used to collect information about bedtimes, waketimes, intra-night awakenings, non-restorative sleep, and afternoon naps over a period of 14 days. Mean duration of night sleep was 6.2 h (median 6.0, range 4.5-9.3), while mean duration of daytime naps was 70 min (median 75, range 10-315). Duration of night sleep was associated with day of the week and gender, but not with BMI. Non-restorative sleep, which occurred 25% of total sleep times, was associated with night sleep sleep awakening occurred 58.5% of total sleep times. Afternon naps were taken by 225 (82%) of subjects. Duration of night sleep in this African population is not longer than the duration in Western countries. Intra-night awakening and non-restorative sleep; however, occur more frequently, and afternoon nap is usually in excess of 1 h.

  11. Undergraduate medical education in Germany

    Directory of Open Access Journals (Sweden)

    Chenot, Jean-François

    2009-04-01

    Full Text Available The purpose of this article is to give international readers an overview of the organisation, structure and curriculum, together with important advances and problems, of undergraduate medical education in Germany. Interest in medical education in Germany has been relatively low but has gained momentum with the new "Regulation of the Licensing of Doctors" which came into effect in 2003. Medical education had required substantial reform, particularly with respect to improving the links between theoretical and clinical teaching and the extension of interdisciplinary and topic-related instruction. It takes six years and three months to complete the curriculum and training is divided into three sections: basic science (2 years, clinical science (3 years and final clinical year. While the reorganisation of graduate medical education required by the new "Regulation of the Licensing of Doctors" has stimulated multiple excellent teaching projects, there is evidence that some of the stipulated changes have not been implemented. Indeed, whether the medical schools have complied with this regulation and its overall success remains to be assessed systematically. Mandatory external accreditation and periodic reaccreditation of medical faculties need to be established in Germany.

  12. Tratamento ortodôntico em pacientes com dentes reimplantados após avulsão traumática: relato de caso Orthodontic treatment in patients with reimplanted teeth after traumatic avulsion: a case report

    Directory of Open Access Journals (Sweden)

    Simone Requião Thá Rocha

    2010-08-01

    Full Text Available INTRODUÇÃO: a alta prevalência de indivíduos com traumatismo dentário prévio ao tratamento ortodôntico justifica os cuidados a serem observados antes e durante o tratamento, considerando todas as implicações do movimento ortodôntico sobre os dentes traumatizados. Entre as lesões traumáticas dentárias, a avulsão com posterior reimplantação do dente é a que apresenta maior risco de complicações - como necrose pulpar, reabsorção radicular e anquilose -, sendo também a que inspira maiores cuidados pelo ortodontista. OBJETIVO: este trabalho busca, através do relato de um caso clínico, analisar as implicações do reimplante dentário após avulsão traumática, em pacientes que requerem tratamento ortodôntico. CONCLUSÕES: a movimentação ortodôntica de um dente reimplantado, após sua avulsão traumática, é possível desde que não ocorra qualquer sinal de anormalidade. Porém, dentes que sofrem anquilose não são passíveis de movimentação ortodôntica, mas devem ser preservados como mantenedores de espaço, até a reabsorção total da raiz, desde que não apresentem infraposição severa. Ocorrendo infraposição severa do dente anquilosado, é indicada a amputação da coroa e o sepultamento da raiz, como meio de favorecer a manutenção do osso alveolar na região, pois ocorrerá reabsorção por substituição da raiz sepultada, como ocorreu no caso clínico apresentado.INTRODUCTION: The high prevalence of individuals with dental trauma prior to orthodontic treatment justifies the precautions that should be followed before and during treatment, considering all possible effects of orthodontic movement on traumatized teeth. Among the major traumatic dental injuries, avulsion with subsequent tooth reimplantation entails a higher than average risk of complications, such as pulp necrosis, root resorption and ankylosis. Therefore, it gives orthodontists several reasons for concern. OBJECTIVE: This case report sought

  13. Uso e necessidade de prótese dentária em idosos brasileiros segundo a Pesquisa Nacional de Saúde Bucal (SBBrasil 2010): prevalências e fatores associados

    OpenAIRE

    Juliana S. Azevedo; Marina Sousa Azevedo; Luisa Jardim Correa de Oliveira; Marcos Britto Correa; Flávio Fernando Demarco

    2017-01-01

    Resumo: O objetivo deste estudo foi avaliar o uso e a necessidade de prótese dentária entre os idosos brasileiros (65-74 anos) e verificar fatores associados. Foram analisados dados de 7.496 idosos participantes do Pesquisa Nacional de Saúde Bucal realizado em 2010 (SBBrasil, 2010). O uso e a necessidade de prótese dentária foram usados como desfechos. As variáveis de exposição incluíram características demográficas, socioeconômicas, de uso de serviços e de autopercepção da saúde bucal. Análi...

  14. Efeitos do tratamento endodôntico de dentes não vitais realizado em sessão única e múltiplas sessões: uma meta-análise

    OpenAIRE

    Almeida, Dulce Oliveira

    2013-01-01

    Esse estudo avaliou os efeitos do tratamento endodôntico de dentes não vitais realizado em sessão única em comparação com o de múltiplas sessões. Utilizou-se de busca eletrônica nas bases de dados Web of Science e Medline de ensaios clínicos randomizados para o tratamento endodôntico de dentes não vitais, comparativos para ambas as técnicas, que foram selecionados a partir de critérios de rigor metodológico. As referências dos estudos de revisões sistemáticas e meta-análises sobre a temática ...

  15. Evaluation of mechanical properties of dental tissue of patients who undergone radiotherapy = : Análise das propriedades mecânicas dos tecidos dentários de pacientes submetidos à radioterapia

    OpenAIRE

    Roberta Galetti

    2015-01-01

    Resumo: Este estudo avaliou o comportamento mecânico de tecidos dentários de pacientes com câncer de cabeça e pescoço submetidos à radioterapia. No capítulo I, o ensaio mecânico da nanoindentação foi utilizado para determinar a dureza e módulo de elasticidade do esmalte, dentina e da região de união restauradora em dentina (adesivo, camada híbrida e dentina subjacente). Foram utilizados seis dentes incisivos inferiores irradiados in vivo e não irradiados (grupos controle). A dureza e o módulo...

  16. Premières évidences empiriques sur les antécédents de l'orientation vers le marché dans la gestion bancaire privée

    OpenAIRE

    Graber, Stéphane; Czellar, Sandor; Denis, Jean-Emile

    2003-01-01

    Les travaux sur l'orientation vers le marché (OVM) ont accordé relativement peu d'attention à l'examen de ses antécédents. Un modèle des antécédents de l'OVM est proposé qui inclut deux construits distincts, la culture d'entreprise et la structure organisationnelle. Le test du modèle a été effectué sur un échantillon de banques privées, un secteur particulièrement propice à cette étude au vue des mutations environnementales et organisationnelles qui s'y manifestent. Dans l'ensemble, le test v...

  17. Prevalência de agenesia dentária no município de Cacoal (RO) : pacientes submetidos a tratamento ortodôntico no período de 2000 a 2005

    OpenAIRE

    Matuda, Alayana Flávia

    2008-01-01

    A finalidade desta pesquisa foi determinar a prevalência de agenesia dentária em pacientes com idade a partir de sete anos, submetidos a tratamento em consultórios ortodôntia no município de Cacoal - RO no período de 2000 a 2005, por meio da análise dos prontuários clínicos. Foram analisadas 300 radiografias panorâmicas, 87 do gênero masculino e 213 do gênero feminino. A agenesia dentária foi constatada em 04 (1,33%) dos prontuários estudados: sendo um (0,33%) do sexo masculino e três (1%) do...

  18. Chumbo no esmalte dentario como indicador biologico de exposição ambiental e sua relação com defeitos do esmalte e carie em dentes deciduos

    OpenAIRE

    Viviane Elisangela Gomes

    2004-01-01

    Resumo: O chumbo (Pb) é considerado um dos maiores poluentes ambientais e o esmalte dentário pode ser um indicador da exposição pregressa ao mesmo; pois a incorporação do Pb neste tecido é permanente. Uma técnica, in vivo, de biópsia de esmalte tornou possível a determinação da concentração do chumbo presente na superfície dentária sem o comprometimento do mesmo. A presença do chumbo na estrutura do esmalte parece estar associada ao aumento da prevalência de defeitos de esmalte e de cárie. As...

  19. Microfósseis contidos no cálculo dentário como evidência do uso de recursos vegetais nos sambaquis de Jabuticabeira II (SC) e Moraes (SP)

    OpenAIRE

    Célia Helena Cezar Boyadjian

    2007-01-01

    A análise de microfósseis vegetais é extremamente útil para a recuperação de informações acerca da utilização de plantas por grupo humanos do passado, especialmente em sítios arqueológicos em que os macro-restos botânicos são raros, como é o caso dos sambaquis. Estes micro-restos podem ser obtidos a partir de sedimento, coprólitos, utensílios de pedra ou cerâmica, assim como de cálculo dentário (tártaro). Durante a mastigação e a utilização dos dentes como ferramentas, micro partículas proven...

  20. Framing the Undergraduate Research Experience: Discovery Involvement in Retailing Undergraduate Education

    Science.gov (United States)

    Sternquist, Brenda; Huddleston, Patricia; Fairhurst, Ann

    2018-01-01

    We provide an overview of ways to involve undergraduate business and retailing students in faculty research projects and discuss advantages of these student-faculty collaborations. We use Kolb's experiential learning cycle to provide a framework for creating an effective and engaging undergraduate research experience and use it to classify types…

  1. IgA anti-Streptococcus mutans em crianças com e sem cárie dentária

    Directory of Open Access Journals (Sweden)

    YAZAKI Suzete Cristina

    1999-01-01

    Full Text Available A cárie dentária é uma doença infecciosa crônica que necessita pelo menos quatro componentes para desenvolver-se: hospedeiro suscetível, microbiota patogênica, dieta rica em sacarose e tempo. Este trabalho estuda as correlações existentes entre estreptococos salivares do grupo mutans, placa bacteriana e anticorpos IgA anti-Streptococcus mutans em crianças com e sem experiência de cárie. Para tanto, utilizou-se o meio Mitis Salivarius (DIFCO para determinar o número de Unidades Formadoras de Colônias (UFC/ml, o Índice de Higiene Oral Simplificado (IHOS para mensurar a quantidade de placa bacteriana e a técnica ELISA para detectar anticorpos anti-S. mutans. Os resultados obtidos mostraram que não existe uma correlação entre os níveis salivares de estreptococos (UFC/ml e IgA anti-S. mutans na população estudada. No grupo com cárie, uma correlação positiva, estatisticamente significante, foi observada entre o Índice de placa e IgA específica.

  2. Quiste dentígero que causa deformación facial en un niño. Presentación de un caso

    Directory of Open Access Journals (Sweden)

    Juan Carlos Quintana Díaz

    2012-09-01

    Full Text Available Se presenta un caso interesante de un niño de 13 años que acude a la consulta de Cirugía Máxilofacial por presentar asimetría facial y bucal, además de obstrucción nasal del lado de la deformidad. Después de realizar exámenes de laboratorio y radiográficos se lleva sala de cirugía para realizar la exéresis del canino superior derecho retenido, enuclear la extensa área radiolucida a los rayos X y se reconstruye el defecto óseo residual con Hidroxiapatita en gránulos HAP-200, posteriormente se realiza estudio histopatológico. El diagnóstico definitivo corroboró el presuntivo (quiste dentígero. El paciente evolucionó de forma excelente desapareciendo la deformidad facial y los demás síntomas preoperatorios. El examen radiográfico post-operatorio mostró una excelente reconstrucción y osteo-integración del material empleado.

  3. Estudo longitudinal do sucesso clínico-radiográfico de dentes tratados com medicação intracanal de hidróxido de cálcio

    Directory of Open Access Journals (Sweden)

    Mauro Juvenal Nery

    Full Text Available INTRODUÇÃO: O tratamento endodôntico é de fundamental importância para abolir a infecção presente em dentes que apresentam necrose pulpar. OBJETIVO: O objetivo do presente estudo foi avaliar clínica e radiograficamente a eficácia dos tratamentos de canais radiculares de dentes com lesão periapical crônica, efetuados pelos graduandos em Odontologia, da Faculdade de Odontologia de Araçatuba - UNESP. MATERIAL E MÉTODO: Foram selecionados 100 pacientes que possuíam dentes com lesão periapical crônica para serem tratados. Após o preparo biomecânico, os canais radiculares receberam uma medicação intracanal de hidróxido de cálcio durante o período de 14 dias. Os canais radiculares foram obturados com cimento endodôntico à base de hidróxido de cálcio. Foi realizada a proservação por um período entre oito e 11 meses. RESULTADO: A análise dos resultados permitiu constatar a porcentagem de 78,46% dos casos com reparo total da lesão periapical e de 21,54% dos casos em que não houve evidências de reparo. CONCLUSÃO: Ocorreu reparo das lesões periapicais nos dentes tratados pelos graduandos da Faculdade de Odontologia de Araçatuba - UNESP.

  4. Prevalência de lesões bucais associadas ao uso de próteses dentárias removíveis em um serviço de estomatologia

    Directory of Open Access Journals (Sweden)

    Gardênia Matos Paraguassú

    2011-09-01

    Full Text Available As próteses dentárias removíveis restabelecem a função e estética do sistema estomatognático, embora possam causar injúrias aos tecidos bucais. O objetivo deste estudo é avaliar a prevalência de lesões bucais relacionadas ao uso de próteses dentárias removíveis. Foi realizada a revisão de prontuários dos pacientes atendidos no Serviço de Estomatologia da Faculdade de Odontologia da Universidade Federal da Bahia, no periodo de junho de 2006 à dezembro de 2007. Dos 28 indivíduos usuários de próteses dentárias removíveis, 25 (89,3 % apresentaram alguma alteração na mucosa bucal, sendo que 42,8 % destas apresentavam-se mal-adaptadas. A hiperplasia fibrobrosa inflamatória (29,42 %, candidíase crônica atrófica (20,6 %, queilite angular (8,82 % e úlcera traumática (8,82 % foram as lesões mais prevalentes, e a mucosa alveolar (35,3 % e o palato duro (29,4 % os sítios anatômicos mais acometidos. Estes resultados reafirmam a importância da confecção de próteses adequadas, da necessidade de se realizar controles periódicos e fornecer instruções sobre higiene bucal aos pacientes que vierem fazer uso de próteses dentárias removíveis.

  5. Influência da pressão pulpar positiva na difusão de peróxido de hidrogénio de um produto de branqueamento através dos tecidos dentários in vitro: ensaio piloto

    OpenAIRE

    Cardoso, Catarina Guerreiro Martins Crêspo

    2015-01-01

    Tese de mestrado, Medicina Dentária, Universidade de Lisboa, Faculdade de Medicina Dentária, 2015 Objetivos: Verificar se a pressão pulpar positiva (PPP) altera a difusão de peróxido de hidrogénio (PH) para a câmara pulpar através dos tecidos dentários, após aplicação de um produto de branqueamento. Desenho do estudo: Ensaio piloto in vitro. Materiais e Métodos: 20 dentes pré-molares e caninos foram divididos em quatro grupos (n=5). Todos foram seccionados horizontalmente 2-3mm abaixo da j...

  6. Accreditation standards for undergraduate forensic science programs

    Science.gov (United States)

    Miller, Marilyn Tebbs

    Undergraduate forensic science programs are experiencing unprecedented growth in numbers of programs offered and, as a result, student enrollments are increasing. Currently, however, these programs are not subject to professional specialized accreditation. This study sought to identify desirable student outcome measures for undergraduate forensic science programs that should be incorporated into such an accreditation process. To determine desirable student outcomes, three types of data were collected and analyzed. All the existing undergraduate forensic science programs in the United States were examined with regard to the input measures of degree requirements and curriculum content, and for the output measures of mission statements and student competencies. Accreditation procedures and guidelines for three other science-based disciplines, computer science, dietetics, and nursing, were examined to provide guidance on accreditation processes for forensic science education programs. Expert opinion on outcomes for program graduates was solicited from the major stakeholders of undergraduate forensic science programs-forensic science educators, crime laboratory directors, and recent graduates. Opinions were gathered by using a structured Internet-based survey; the total response rate was 48%. Examination of the existing undergraduate forensic science programs revealed that these programs do not use outcome measures. Of the accreditation processes for other science-based programs, nursing education provided the best model for forensic science education, due primarily to the balance between the generality and the specificity of the outcome measures. From the analysis of the questionnaire data, preliminary student outcomes, both general and discipline-specific, suitable for use in the accreditation of undergraduate forensic science programs were determined. The preliminary results were reviewed by a panel of experts and, based on their recommendations, the outcomes

  7. Estudo eletromiográfico do músculo masseter durante o apertamento dentário e mastigação habitual em adultos com oclusão dentária normal Electromyographic study of the masseter muscle during maximal voluntary clenching and habitual chewing in adults with normal occlusion

    Directory of Open Access Journals (Sweden)

    Adriana Rahal

    2009-01-01

    Full Text Available OBJETIVO: Analisar a diferença entre os lados na atividade eletromiográfica do masseter em indivíduos adultos com oclusão dentária normal. MÉTODOS: Foram avaliados 30 indivíduos saudáveis entre 21 e 30 anos e realizou-se eletromiografia de superfície nos músculos masseteres direito e esquerdo, durante apertamento em máxima intercuspidação e mastigação habitual com uva passa. Foram computados os valores médios dos três apertamentos dentários e dos 15 segundos da mastigação habitual para cada indivíduo. Foram considerados para a análise: o lado de maior valor e o de menor valor eletromiográfico. RESULTADOS: Durante o apertamento dentário, a diferença média entre os dois lados foi de 20,0 microvolts (μV com intervalo de confiança (95% entre 14,0 e 26,0 μV e durante a mastigação habitual, a diferença média entre os dois lados foi de 10,3 μV com intervalo de confiança (95% entre 6,7 e 13,8 μV. CONCLUSÃO: Houve diferença estatisticamente significante entre os lados, com relação entre eles de 24% para o apertamento dentário e de 27% para a mastigação habitual, em indiv duos adultos saudáveis.PURPOSE: To analyze the difference between both sides of the face during the electromyographic activity of the masseter muscle in adults with normal occlusion. METHODS: Thirty healthy individuals with ages ranging from 21 to 30 years old were selected. Surface electromyography was performed on right and left masseter muscles during maximal voluntary clenching and habitual chewing with raisins. The mean values of three teeth clenching and fifteen seconds of habitual chewing were calculated for each subject. The analysis considered the sides with higher and lower electromyographic activity. RESULTS: During maximal voluntary clenching, the mean difference between sides was 20.0 microvolts (μV, with confidence interval (95% between 14.0 and 26.0 μV. During habitual chewing, the mean difference between sides was 10.3

  8. Má oclusão de Classe I de Angle, com ausência congênita e impacção de dentes permanentes Angle Class I malocclusion with congenitally absence and impaction of permanent teeth

    Directory of Open Access Journals (Sweden)

    Eduardo Silveira Ferreira

    2009-12-01

    Full Text Available Este artigo relata o tratamento ortodôntico de um paciente com 14 anos e 6 meses de idade, portador de má oclusão de Classe I de Angle, que apresentava ectopia e impacção do dente 45 e ausência congênita do dente 35. O caso foi tratado com extração do dente 45 e fechamento dos espaços inferiores. Documentações inicial, final e pós-tratamento serão apresentadas e discutidas. Esse caso foi apresentado à Diretoria do Board Brasileiro de Ortodontia e Ortopedia Facial (BBO, representando a categoria 7, livre escolha, como parte dos requisitos para a obtenção do título de Diplomado pelo BBO.This article reports the orthodontic treatment of a 14 year and 6 months old patient that had a Angle Class I malocclusion with an ectopic position and impaction of the tooth 45 and congenitally absence of tooth 35. This case was treated with the extraction of the tooth 45 and space closure in the lower arch. Initial, final and post-treatment orthodontic records will be presented and discussed. This case was presented to the Brazilian Board of Orthodontics and Facial Orthopedics (BBO, representing the category 7, free choice, as part of the requirements for achieving the title of BBO diplomate.

  9. Introducing Science to undergraduate students

    Directory of Open Access Journals (Sweden)

    P. Avila Jr

    2006-07-01

    Full Text Available The knowledge of scientific method provides stimulus and development of critical thinking and logical analysis of information besides the training of continuous formulation of hypothesis to be applied in formal scientific issues as well as in everyday facts. The scientific education, useful for all people, is indispensable for the experimental science students. Aiming at the possibility to offer a systematic learning of the scientific principles, we developed a undergraduate course designed to approximate the students to the procedures of scientific production and publication. The course was developed in a 40 hours, containing two modules: I. Introducing Scientific Articles (papers and II. Writing Research Project. The first module deals with: (1 the difference between scientific knowledge and common sense; (2 scientific methodology; (3 scientific publishing categories; (4 logical principles; (5 deduction and induction approach and (6 paper analysis. The second module includes (1 selection of problem to be solved by experimental procedures; (2 bibliography revision; (3 support agencies; (4 project writing and presentation and (5 critical analysis of experimental results. The course used a Collaborative Learning strategy with each topic being developed through activities performed by the students. Qualitative and quantitative (through Likert questionnaires evaluation were carried out in each step of the course, the results showing great appreciation by the students. This is also the opinion of the staff responsible for the planning and development of the course, which is now in its second and improved version.

  10. Reading Habits and Attitudes of UMSKAL Undergraduates

    Directory of Open Access Journals (Sweden)

    Shameem Ahmed

    2016-03-01

    Full Text Available Effective reading is essential for success in acquiring a foreign language (Mikulecky 2008. Students have to read a wide range of textbooks and related materials at the tertiary level. Lack of adequate reading habit is, therefore, bound to impede students’ progress towards mastery of a foreign language. This study investigated reading habits and attitudes on reading of the undergraduate students attending ESL courses at a public university in Malaysia. For data collection, a 35 item questionnaire based on the Adult Survey of Reading Attitude (ASRA from the work of Smith (1991 were designed and administered on around 314 students. The questionnaire investigated the students’ general habit, preferences, and attitude towards reading. This study was based on the following research questions: What are the reading habits of these undergraduate students? What are the attitudes of these students to reading as a useful language learning skill? What are the reading preferences of these undergraduate students? The research findings through qualitative analysis revealed that the undergraduate students had an overall positive attitude towards reading in spite of their minimal enjoyment of it and the resulting anxieties and difficulties they face. Based on the findings, few recommendations were made to improve reading among those undergraduates.

  11. Bringing Nuclear Science into the Undergraduate Curriculum

    Science.gov (United States)

    Peaslee, Graham

    2006-04-01

    Think about the first time you encountered nuclear science in your formal curriculum. For most nuclear scientists this experience occurred as an undergraduate in an upper-level course in a traditional four-year institution. Because of changing student demographics, an explosion of interest in the life sciences, the end of the cold war and a variety of other factors, fewer undergraduates are encountering a traditional nuclear science course at all. For the field to remain vital, we suggest that educators in nuclear science will have to adapt to the changes in student populations and interests. To this end we now offer a variety of experiences to our undergraduate students that incorporate fundamental nuclear science. One component to our approach is to create exciting opportunities in undergraduate research, and another component involves creation of nuclear science modules that can fit within other courses. In recent years both of these components have evolved with an interdisciplinary flavor, but continue to yield students that become interested in pursuing nuclear science careers. We will discuss research opportunities offered to undergraduates at Hope College, and our success with collaborative research opportunities at a variety of extramural laboratories, as well as with our in-house research program with a low-energy accelerator. An overview of several pedagogical approaches we have adopted will also be presented, and there is clearly opportunity to pursue this approach much further. Although the examples are specific to Hope College, both components can clearly be adopted at a variety of other institutions.

  12. Transfusion medicine in American undergraduate medical education.

    Science.gov (United States)

    Karp, Julie K; Weston, Christine M; King, Karen E

    2011-11-01

    Blood transfusion is the most common procedure performed in American hospitals, and transfusions are commonly ordered by physicians without formal training in transfusion medicine. Several transfusion medicine curricula have been proposed, including those developed through the Transfusion Medicine Academic Awards (TMAA). To our knowledge, no comprehensive study has assessed how transfusion medicine is incorporated into undergraduate medical education. We conducted an online survey to determine the manner in which transfusion medicine is incorporated into American undergraduate medical education. The survey was e-mailed to administrators of medical education at all of the 129 American medical schools accredited by the Association of American Medical Colleges. Eighty-six (67%) of the 129 identified medical school administrators responded. Seventy-one (83%) of the 86 administrators reported that their undergraduate medical education curriculum provides didactic lectures in transfusion medicine, with 48% of medical schools providing 1 or 2 hours of lecture-based instruction. A minority reported small group sessions devoted to transfusion medicine topics. While a slim majority reported the availability of transfusion medicine electives, only one of 84 administrators reported that such a rotation is required. Seventy-six of 83 (92%) administrators were unfamiliar with either the 1989 or the 1995 TMAA transfusion medicine curricula. Transfusion medicine content in American undergraduate medical education is variable and the influence of the TMAA program on contemporary medical school curricula is questionable. Future efforts in this area should focus on standardizing and improving undergraduate medical education in transfusion medicine. © 2011 American Association of Blood Banks.

  13. Avaliação clínica do localizador apical eletrônico novapex em dentes anteriores = The clinical avaluation of the novapex apex locator in the determining working length in anteriors tooth

    Directory of Open Access Journals (Sweden)

    Renner, Daniel

    2007-01-01

    Full Text Available Na terapia endodôntica, a determinação correta do comprimento de trabalho, com vistas ao preparo químico mecânico, constitui-se em um passo importante para não agredir os tecidos da região periapical. O objetivo do presente estudo foi avaliar a confiabilidade do localizador apical eletrônico NOVAPEX na determinação do comprimento de trabalho de instrumentação, utilizando como parâmetro de comparação a radiografia periapical, efetuada pela técnica da bissetriz. A amostra foi composta por 76 canais de dentes anteriores, superiores e inferiores. Destes, 26 dentes possuíam polpa viva e 50, polpa necrosada. De acordo com o diâmetro anatômico no terço apical, foi introduzida no interior do canal radicular uma lima justaposta à esta área, com comprimentos de 25 ou 31 mm e quando o aparelho acusava o led indicador 1, os dentes eram radiografados nesta medida. As radiografias foram digitalizadas em um scaner especial para radiografias e medidas da ponta do instrumento ao vértice apical radiográfico foram determinadas com o auxílio do programa Photoshop 7. 0. Medidas compreendidas entre 0,5 mm e 2 mm aquém do vértice apical radiográfico foram consideradas confiáveis. Os resultados mostraram índice de acerto em 25 medições (96,2% em dentes com polpa vital e 43 medições (86% em dentes com polpa mortificada. Do total de casos, em 68 medições (89,5% o referido localizador ofereceu medidas radiográficas dentro do parâmetro pré-estabelecido. Conclui-se, através da análise dos resultados, que o localizador apical NOVAPEX constitui-se em um bom recurso auxiliar na determinação do comprimento de trabalho de instrumentação

  14. Desigualdades contextuais e individuais da prevalência de dor dentária em adultos e idosos no Brasil Contextual and individual inequalities in dental pain prevalence among Brazilian adults and elders

    Directory of Open Access Journals (Sweden)

    Marco A. Peres

    2012-01-01

    Full Text Available O objetivo deste estudo foi conhecer a prevalência de dor dentária e fatores associados em adultos e idosos residentes nas capitais brasileiras usando os dados do Sistema de Vigilância de Fatores de Risco e Proteção para Doenças Crônicas por Inquérito Telefônico (VIGITEL, de 2009 (n = 54.367. Dor dentária foi a variável dependente. Macrorregião, idade, sexo, raça, escolaridade, posse de plano de saúde, tabagismo e consumo de refrigerantes foram as variáveis exploratórias. Foram realizadas regressões de Poisson multinível. A prevalência de dor dentária foi de 15,2%; Macapá e São Luís apresentaram prevalências maiores que 20% enquanto em todas as capitais do Sul e Sudeste, em Cuiabá, Campo Grande, Maceió, Recife e Natal foram encontradas prevalências menores que 15%. Residentes no Norte e Nordeste, mulheres, pretos e pardos, aqueles que não possuem plano de saúde, tabagistas e consumidores de refrigerantes apresentaram as maiores prevalências de dor dentária. A dor dentária é um problema de saúde pública que deve ser monitorado pelos sistemas de vigilância em saúde.This study aimed to assess the prevalence of dental pain among adults and older people living in Brazil's State capitals. Information was gathered from the Telephone Survey Surveillance System for Risk and Protective Factors for Chronic Diseases (VIGITEL in 2009 (n = 54,367. Dental pain was the outcome. Geographic region, age, gender, race, schooling, private health coverage, smoking, and soft drink consumption were the explanatory variables. Multilevel Poisson regression models were performed. Prevalence of dental pain was 15.2%; Macapá and São Luís had prevalence rates greater than 20%; all capitals in the South and Southeast, plus Cuiabá, Campo Grande, Maceió, Recife, and Natal had prevalence rates less than 15%. Factors associated with increased prevalence of dental pain were the North and Northeast regions, female gender, black/brown skin

  15. Journal of Undergraduate Research, Volume IX, 2009

    Energy Technology Data Exchange (ETDEWEB)

    Stiner, K. S.; Graham, S.; Khan, M.; Dilks, J.; Mayer, D.

    2009-01-01

    Each year more than 600 undergraduate students are awarded paid internships at the Department of Energy’s (DOE) National Laboratories. Th ese interns are paired with research scientists who serve as mentors in authentic research projects. All participants write a research abstract and present at a poster session and/or complete a fulllength research paper. Abstracts and selected papers from our 2007–2008 interns that represent the breadth and depth of undergraduate research performed each year at our National Laboratories are published here in the Journal of Undergraduate Research. The fields in which these students worked included: Biology; Chemistry; Computer Science; Engineering; Environmental Science; General Science; Materials Science; Medical and Health Sciences; Nuclear Science; Physics; Science Policy; and Waste Management.

  16. Undergraduate psychiatry in India: A SWOT analysis.

    Science.gov (United States)

    Kumar, Pawan; Jangid, Purushottam; Sethi, Sujata

    2018-03-01

    Psychiatric disorders are highly prevalent and remains a huge burden on the society. In spite of that persons with mental illness are marginalized and mental health is largely being neglected. There is an acute shortage of mental health professionals in India, and also there is inadequate exposure to psychiatry during the medical undergraduate training in India. Moreover, the perception towards psychiatry and psychiatrists is not favorable among medical fraternity and policy makers. This is reflected in the fact that in spite of clearly deficient undergraduate psychiatry curriculum, no steps have been taken towards improving it and recommendations are not being implemented in true spirit. This review tries to identify the gaps in undergraduate curriculum, present a SWOT analysis of current situation and recommend the possible ways to address the deficiencies particularly in India. Copyright © 2018 Elsevier B.V. All rights reserved.

  17. Prevalence of developmental defects of enamel in children and adolescents with asthma Prevalência de defeitos do desenvolvimento do esmalte dentário em crianças e adolescentes com asma

    Directory of Open Access Journals (Sweden)

    Rodrigho Pelisson Guergolette

    2009-04-01

    Full Text Available OBJECTIVE: This study aimed to evaluate the prevalence of developmental defects of enamel (DDEs in relation to asthma severity, symptom onset and pharmacological treatment in pediatric asthma patients. METHODS: Children and adolescents (68 asthma patients and 68 controls, 5-15 years of age and residents of the city of Londrina, Brazil, were enrolled in the study. Medical and dental histories were collected through the use of a structured questionnaire. Each participant underwent a dental examination in which the examiner employed the DDE index. RESULTS: Of the 68 asthma group subjects, 61 (89.7% presented dental enamel defects, compared with only 26 (38.2% of those in the control group. Using multivariate logistic regression analysis, we estimated the risk of DDEs in permanent dentition to be 11 times higher in pediatric subjects with asthma than in those without (OR = 11.88, p = 0.0001. The occurrence of dental enamel defects correlated with greater asthma severity (p = 0.0001 and earlier symptom onset (p = 0.0001. However, dental enamel defects did not correlate with the initiation of treatment (p = 0.08 or the frequency of medication use (p = 0.93. CONCLUSIONS: Pediatric patients with severe, early-onset asthma are at increased risk of dental enamel defects and therefore require priority dental care.OBJETIVO: Avaliou-se a prevalência de developmental defects of enamel (DDEs, defeitos de desenvolvimento do esmalte dentário em pacientes pediátricos com asma e sua relação com a severidade da asma, o início dos sintomas e o tratamento medicamentoso. MÉTODOS: Os participantes do estudo eram residentes do município de Londrina (PR, com 5 a 15 anos, sendo 68 asmáticos e 68 controles. Foram levantados dados retrospectivos da história médica e de saúde bucal da população do estudo através de um questionário estruturado. Todos os participantes foram submetidos a um exame dental. Para a avaliação dos defeitos de desenvolvimento do

  18. Compendium of student papers : 2010 undergraduate transportation scholars program.

    Science.gov (United States)

    2011-06-01

    This report is a compilation of research papers written by students participating in the 2010 Undergraduate : Transportation Scholars Program. The 10-week summer program, now in its 20th year, provides : undergraduate students in Civil Engineering th...

  19. Compendium of student papers : 2011 undergraduate transportation scholars program.

    Science.gov (United States)

    2012-05-01

    This report is a compilation of research papers written by students participating in the 2011 Undergraduate : Transportation Scholars Program. The 10-week summer program, now in its 21st year, provides : undergraduate students in Civil Engineering th...

  20. Compendium of student papers : 2009 undergraduate transportation engineering fellows program.

    Science.gov (United States)

    2009-10-01

    This report is a compilation of research papers written by students participating in the 2009 Undergraduate : Transportation Scholars Program. The ten-week summer program, now in its nineteenth year, provides : undergraduate students in Civil Enginee...

  1. Near-peer mentorship for undergraduate training in Ugandan ...

    African Journals Online (AJOL)

    Near-peer mentorship for undergraduate training in Ugandan medical schools: views of undergraduate students. Godfrey Zari Rukundo, Aluonzi Burani, Jannat Kasozi, Claude Kirimuhuzya, Charles Odongo, Catherine Mwesigwa, Wycliff Byona, Sarah Kiguli ...

  2. Compendium of student papers : 2013 undergraduate transportation scholars program.

    Science.gov (United States)

    2013-11-01

    This report is a compilation of research papers written by students participating in the 2013 Undergraduate Transportation Scholars Program. The 10-week summer program, now in its 23nd year, provides undergraduate students in Civil Engineering the op...

  3. Personality and career decision making in undergraduates

    Directory of Open Access Journals (Sweden)

    Cabrera, Lidia

    2011-06-01

    Full Text Available The relationships between personality and career decision making in undergraduates are analyzed in this work. The hypothesis is that efficient personality is associated with the more mature process of career decision making. For this hypothesis, the Questionnaire of Efficient Personality and the Inventory of Career Factors was administered to 497 students in their final year of undergraduate school. The collected data was put under factorial analysis, analysis of differences of averages, and analysis of variance. The results confirm that an effective personality is tied to career decision making based as much on one´s knowledge of oneself as an understanding of the working world.

  4. Teaching nuclear and radiochemistry at undergraduate colleges

    International Nuclear Information System (INIS)

    Kinard, W.F.

    1993-01-01

    A large fraction of the potential graduate students in chemistry come from undergraduate colleges. The exposure of these students to the field of nuclear and radiochemistry is limited by the fact that few professionals actively involved in the field teach at these schools. There is also increasing competition for the limited number of chemistry students by other chemical specializations. Innovative approaches such as a short course to introduce students to nuclear and radiochemistry and some of the needs for undergraduate teaching are discussed. (author) 6 refs.; 2 figs

  5. Selection of software for mechanical engineering undergraduates

    Energy Technology Data Exchange (ETDEWEB)

    Cheah, C. T.; Yin, C. S.; Halim, T.; Naser, J.; Blicblau, A. S., E-mail: ablicblau@swin.edu.au [Swinburne University of Technology, Faculty of Science Engineering and Technology, PO Box 218 Hawthorn, Victoria, Australia, 3122 (Australia)

    2016-07-12

    A major problem with the undergraduate mechanical course is the limited exposure of students to software packages coupled with the long learning curve on the existing software packages. This work proposes the use of appropriate software packages for the entire mechanical engineering curriculum to ensure students get sufficient exposure real life design problems. A variety of software packages are highlighted as being suitable for undergraduate work in mechanical engineering, e.g. simultaneous non-linear equations; uncertainty analysis; 3-D modeling software with the FEA; analysis tools for the solution of problems in thermodynamics, fluid mechanics, mechanical system design, and solid mechanics.

  6. Selection of software for mechanical engineering undergraduates

    International Nuclear Information System (INIS)

    Cheah, C. T.; Yin, C. S.; Halim, T.; Naser, J.; Blicblau, A. S.

    2016-01-01

    A major problem with the undergraduate mechanical course is the limited exposure of students to software packages coupled with the long learning curve on the existing software packages. This work proposes the use of appropriate software packages for the entire mechanical engineering curriculum to ensure students get sufficient exposure real life design problems. A variety of software packages are highlighted as being suitable for undergraduate work in mechanical engineering, e.g. simultaneous non-linear equations; uncertainty analysis; 3-D modeling software with the FEA; analysis tools for the solution of problems in thermodynamics, fluid mechanics, mechanical system design, and solid mechanics.

  7. Learning style preferences of undergraduate nursing students.

    Science.gov (United States)

    Rassool, Goolam Hussein; Rawaf, Salman

    To determine the predominant learning style preferences of undergraduate nursing students. A demographic questionnaire and Honey and Mumford's (2000a) learning styles questionnaire were administered to a purposive sample of 136 students. A response rate of 81% (110) was obtained. The results are congruent with U.K. studies, which show that the reflector is the preferred learning style of undergraduate nursing students. A 'dual' learning style category was also identified. A mismatch between teaching style and the learning styles of students has been found to have serious consequences. A variety of modes of teaching and learning should be used to meet the learning needs of students.

  8. Occlusal caries diagnosis in permanent teeth: an in vitro study Diagnóstico de cárie oclusal em dentes permanentes: estudo in vitro

    Directory of Open Access Journals (Sweden)

    Gisele Angnes

    2005-12-01

    Full Text Available The reduction in caries prevalence has not occurred uniformly for all dental surfaces. As the occlusal surfaces are still the most likely sites for the development of lesions, new methods of diagnosis are still being evaluated. This study compared a laser fluorescence (LF system (DIAGNOdent with the Ekstrand’s visual system for in vitro detection of occlusal caries. A total of 57 extracted molars with macroscopically intact occlusal surfaces were selected. Two-examiners assessed 110 sites by visual inspection (VI and LF. After ten days from the first measurement, all teeth were re-evaluated through the same methods by each examiner. Caries extension was histologically assessed (X 40. The methods were compared by means of sensitivity, specificity, intra- and inter-examiner reproducibility and area under the ROC curve. The kappa’s test showed good intra- and inter-examiner reproducibility for both methods. VI and LF showed similar sensitivities for both examiners, however, VI showed higher specificities than LF. The overall analysis, as demonstrated by the area under the ROC curve, showed that VI had a better performance than the LF device. It was concluded that the Ekstrand’s visual system is more reliable than the LF device. LF should be considered only as an adjuvant for occlusal caries diagnosis.A redução da prevalência de cáries não ocorreu uniformemente para todas as superfícies dentárias. Como as superfícies oclusais ainda são as mais susceptíveis ao desenvolvimento de lesões, novos métodos de diagnóstico ainda estão sendo avaliados. Este estudo comparou um sistema de fluorescência a laser (DIAGNOdent - DD com o método visual de Ekstrand na detecção de cárie oclusal. Um total de 57 terceiros molares com superfícies oclusais macroscopicamente intactas foram selecionados. Dois examinadores examinaram 110 sítios por inspecção visual (IV e DD. Após dez dias da primeira mensuração, todos os dentes foram novamente

  9. Dental caries in young male adults: prevalence, severity and associated factors Cárie dentária em homens jovens: prevalência, severidade e fatores associados

    Directory of Open Access Journals (Sweden)

    Marcelo Augusto Amaral

    2005-12-01

    Full Text Available The aim of the present study was to determine the prevalence and severity of dental caries as well as the needs for dental treatment in 18-year-old males from Maringá, PR, Brazil. The association of dental caries experience with socioeconomic variables was also tested. A cross sectional study was conducted in a random sample of 241 conscripts of the Brazilian Army. The adopted diagnosis criteria were those proposed by the World Health Organization. A socioeconomic questionnaire was utilized to determine family income and the criterion of the Brazil Economic Classification of the National Association of Research Enterprises. Associations among caries prevalence, DMF-T index, treatment needs and socioeconomic variables were evaluated by means of the Chi-Square, Mann-Whitney and Kruskal-Wallis tests. Caries prevalence was 82.6% and the mean DMF-T index was 4.6. Only a mean of 0.8 tooth per individual presented treatment needs. Significant statistical differences were found in caries prevalence and severity (DMF-T. The worst results were observed in the groups of lower income and purchasing power, indicating a need for the implementation of social policies that address these populations aiming at diminishing the existing differences in the health-disease process indicators. On the other hand, treatment needs were only associated to the Brazil Economic Classification Criterion variable (p O objetivo do presente estudo foi conhecer a prevalência e a severidade da cárie dentária, bem como as necessidades de tratamento odontológico de jovens de 18 anos de idade do sexo masculino em Maringá, Paraná, Brasil. A associação da experiência de cárie com variáveis socioeconômicas também foi testada. Foi realizado um estudo transversal em uma amostra aleatória de conscritos (n = 241 do Exército Brasileiro. Os critérios de diagnóstico adotados foram aqueles estabelecidos pela Organização Mundial de Saúde. Foram utilizados um question

  10. Engaging Undergraduates in Science Research: Not Just About Faculty Willingness

    OpenAIRE

    Eagan, M. Kevin; Sharkness, Jessica; Hurtado, Sylvia; Mosqueda, Cynthia M.; Chang, Mitchell J.

    2010-01-01

    Despite the many benefits of involving undergraduates in research and the growing number of undergraduate research programs, few scholars have investigated the factors that affect faculty members’ decisions to involve undergraduates in their research projects. We investigated the individual factors and institutional contexts that predict faculty members’ likelihood of engaging undergraduates in their research project(s). Using data from the Higher Education Research Institute’s 2007–2008 Facu...

  11. Quiste dentígeno gigante en una niña: Presentación de un caso Giant dentigerous cyst in a girl: Case report

    Directory of Open Access Journals (Sweden)

    Juan Carlos Quintana Díaz

    2007-06-01

    Full Text Available Se presenta un caso interesante de una niña de 13 años que acude a la consulta de Cirugía Maxilofacial por presentar asimetría facial y bucal, además de referir diplopia y obstrucción nasal del lado de la deformidad. Después de realizar exámenes de laboratorio, radiográficos y tomografía axial computadorizada (TAC, se lleva al salón de operaciones para realizar extracción del tercer molar superior izquierdo retenido en posición invertida, enuclear la extensa área radiolúcida a los rayos X y radiopaca a la tomografía y posteriormente se realiza estudio histopatológico. El diagnóstico definitivo corroboró el presuntivo (quiste dentígeno . La paciente evolucionó de forma excelente; desaparecieron la deformidad facial y los demás síntomas preoperatorios.An interesting case of a 13 year-old girl comes to Maxillofacial Surgery consultation because she has facial and buccal asymmetry; she also refers diplopia and nasal obstruction on the side of the deformity. After carrying out laboratory exams, radiographic studies and computerized axial tomography (TAC, she was taken to the operating room to receive an extraction of the third left superior molar retained in inverted position, and to have retrieved the extensive rays- X radiolucid and radiopaque area at tomography and later on she underwent a histopathological study. The definitive diagnosis corroborated the presumption of dentition cyst. The patient evolved in an excellent way; her facial deformity and other preoperative symptoms disappeared.

  12. Epistasis in maize (Zea mays L.) : 2. Genetic effects in crosses among early flint and dent inbred lines determined by three methods.

    Science.gov (United States)

    Melchinger, A E; Geiger, H H; Schnell, F W

    1986-03-01

    Three flint and three dent maize (Zea mays L.) inbred lines, their possible F1 crosses, F2 and backcross progenies, and all possible three-way crosses were evaluated in a three-year experiment for yield, ear moisture, and plant height. The purpose was to estimate genetic parameters in European breeding materials from (i) generation means analysis, (ii) diallel analysis of generation means, and (iii) analysis of F1 and three-way cross hybrids. Method (i) was based on the F∞-metric model and methods (ii) and (iii) on the Eberhart-Gardner (1966) genetic model; both models extended for heterotic maternal effects.Differences among generation means for yield and plant height were mainly attributable to dominance effects. Epistatic effects were significantly different from zero in a few crosses and considerably reduced heterosis in both traits. Additive x additive and domiance x dominance effects for yield were consistently positive and negative, respectively. Significant maternal effects were established to the advantage of generations with a heterozygous seed parent. In the diallel analysis, mean squares for dominance effects were greater than for additive effects for yield and plant height but smaller for ear moisture. Though significant for yield and plant height, epistatic variation was small compared to additive and dominance variation. Estimates of additive x additive epistasis for yield were significantly negative in 11 of 15 crosses, suggesting that advantageous gene combinations in the lines had been disrupted by recombination in the segregating generations. The analysis of hybrids supported the above findings regarding the analysis of variance. However, the estimates of additive x additive epistasis for yield were considerably smaller and only minimally correlated with those from the diallel analysis. Use of noninbred materials as opposed to materials with different levels of inbreeding is considered the main reason for the discrepancies in the results.

  13. Comparison of the Carlsson-Dent and GERD-Q questionnaires for gastroesophageal reflux disease symptom detection in a general population.

    Science.gov (United States)

    Contreras-Omaña, R; Sánchez-Reyes, O; Ángeles-Granados, E

    Gastroesophageal reflux disease (GERD) is an extremely common pathology in the general population and one of the main reasons for consultation in gastroenterology. There are different instruments for detecting its symptoms, but few studies comparing one tool with another have been conducted in Mexico. To compare the effectiveness of the Carlsson-Dent questionnaire (CDQ) and the GERD-Q questionnaire (GQQ) in detecting GERD symptoms in a general population. A prospective, descriptive, cross-sectional study was conducted on 220 individuals in an open population within the time frame of May-June 2015. The subjects were evaluated through the self-assessment CDQ and GQQ. The positive scores from the CDQ (≥ 4) were compared with those of the GQQ (≥ 8), to determine which of the two instruments more easily detected patients with GERD symptoms. Fifty-seven percent of the patients were men and the mean patient age was 38.1 years. Fifty percent of the subjects presented with GERD symptoms with a positive score in at least one questionnaire; 45% had positive CDQ results and 23% had positive GQQ results. Fifty-seven percent of the patients with a positive CDQ score presented with overweight/obesity, as did 72% of the patients with a positive GQQ result. Finally, 20% of the individuals had positive results for reflux symptoms in both questionnaires. There was a prevalence of GERD symptoms in 50% of the individuals studied from a general population. The GQQ detected a greater number of GERD symptoms in patients that presented with overweight/obesity and the CDQ was considered easier for patients to understand and answer. It is striking that there was only 20% agreement between the two questionnaires, suggesting that they may be useful for identifying GERD symptoms in different populations. Copyright © 2016 Asociación Mexicana de Gastroenterología. Publicado por Masson Doyma México S.A. All rights reserved.

  14. Prevalência da fluorose dentária em escolares de 12 e 15 anos de idade em Salvador, Bahia, Brasil, 2001

    Directory of Open Access Journals (Sweden)

    Cangussu Maria Cristina Teixeira

    2004-01-01

    Full Text Available O objetivo foi determinar a prevalência da fluorose dentária em uma amostra de 3.313 escolares de 12 e 15 anos em distrito sanitário em Salvador, Bahia, Brasil. Desenvolveu-se um estudo transversal e os dados foram coletados por sete examinadores (kappa = 0.69, segundo os critérios da OMS (índice de Dean. Informações adicionais como participação em programas, acesso ao dentista, local de moradia dos 0-5 anos de vida, sexo e etnia foram obtidos mediante questionário. Procedeu-se à análise descritiva para o município e para cada distrito. Resultou que 31,4% dos escolares aos 12 anos e 27,6% aos 15 anos apresentavam fluorose, predominando a categoria "muito leve". Foram encontradas diferenças entre os distritos (p < 0.05 X². Os distritos de Pau da Lima e Brotas foram os com maior percentual de indivíduos sadios aos 12 anos - 81,8% e 81,6%; e, aos 15 anos, Subúrbio Ferroviário, Pau da Lima e Cajazeiras foram as regiões com menor prevalência - 13,0%, 14,6% e 13,5%. O distrito da Liberdade apresentou maior prevalência - 72,4% e 57,3% aos 12 e 15 anos, respectivamente, atribuída às diferenças na calibração da equipe. Foram identificadas diferenças entre os distritos sanitários, reforçando a necessidade de vigilância à saúde.

  15. Prevalência da fluorose dentária em escolares de 12 e 15 anos de idade em Salvador, Bahia, Brasil, 2001

    Directory of Open Access Journals (Sweden)

    Maria Cristina Teixeira Cangussu

    Full Text Available O objetivo foi determinar a prevalência da fluorose dentária em uma amostra de 3.313 escolares de 12 e 15 anos em distrito sanitário em Salvador, Bahia, Brasil. Desenvolveu-se um estudo transversal e os dados foram coletados por sete examinadores (kappa = 0.69, segundo os critérios da OMS (índice de Dean. Informações adicionais como participação em programas, acesso ao dentista, local de moradia dos 0-5 anos de vida, sexo e etnia foram obtidos mediante questionário. Procedeu-se à análise descritiva para o município e para cada distrito. Resultou que 31,4% dos escolares aos 12 anos e 27,6% aos 15 anos apresentavam fluorose, predominando a categoria "muito leve". Foram encontradas diferenças entre os distritos (p < 0.05 X². Os distritos de Pau da Lima e Brotas foram os com maior percentual de indivíduos sadios aos 12 anos 81,8% e 81,6%; e, aos 15 anos, Subúrbio Ferroviário, Pau da Lima e Cajazeiras foram as regiões com menor prevalência 13,0%, 14,6% e 13,5%. O distrito da Liberdade apresentou maior prevalência 72,4% e 57,3% aos 12 e 15 anos, respectivamente, atribuída às diferenças na calibração da equipe. Foram identificadas diferenças entre os distritos sanitários, reforçando a necessidade de vigilância à saúde.

  16. Engaging Undergraduates in Science Research: Not Just about Faculty Willingness

    Science.gov (United States)

    Eagan, M. Kevin, Jr.; Sharkness, Jessica; Hurtado, Sylvia; Mosqueda, Cynthia M.; Chang, Mitchell J.

    2011-01-01

    Despite the many benefits of involving undergraduates in research and the growing number of undergraduate research programs, few scholars have investigated the factors that affect faculty members' decisions to involve undergraduates in their research projects. We investigated the individual factors and institutional contexts that predict faculty…

  17. Eating Disorders and Body Image of Undergraduate Men

    Science.gov (United States)

    Ousley, Louise; Cordero, Elizabeth Diane; White, Sabina

    2008-01-01

    Eating disorders and body dissatisfaction among undergraduate men are less documented and researched than are eating disorders and body dissatisfaction among undergraduate women. Objective and Participants: In this study, the authors examined these issues in undergraduate men to identify similarities and differences between this population and…

  18. CRP: Collaborative Research Project (A Mathematical Research Experience for Undergraduates)

    Science.gov (United States)

    Parsley, Jason; Rusinko, Joseph

    2017-01-01

    The "Collaborative Research Project" ("CRP")--a mathematics research experience for undergraduates--offers a large-scale collaborative experience in research for undergraduate students. CRP seeks to widen the audience of students who participate in undergraduate research in mathematics. In 2015, the inaugural CRP had 100…

  19. Undergraduate Origins of Recent Science and Engineering Doctorate Recipients.

    Science.gov (United States)

    Hill, Susan T.; And Others

    Because undergraduate education is the foundation for graduate studies, it is important to know where our Nation's science and engineering (S&E) doctorate recipients are receiving their undergraduate training. Specifically, this report addresses the following broad questions: (1) What are the undergraduate origins of S&E doctorate holders? (2)…

  20. Establishing Common Course Objectives for Undergraduate Exercise Physiology

    Science.gov (United States)

    Simonson, Shawn R.

    2015-01-01

    Undergraduate exercise physiology is a ubiquitous course in undergraduate kinesiology/exercise science programs with a broad scope and depth of topics. It is valuable to explore what is taught within this course. The purpose of the present study was to facilitate an understanding of what instructors teach in undergraduate exercise physiology, how…

  1. Prevalence of Diabetes Mellitus in Newly Admitted Undergraduates ...

    African Journals Online (AJOL)

    The prevalence of diabetes mellitus was studied in newly admitted undergraduates of Olabisi Onabanjo University. A total of 2,421 apparently healthy young adults (undergraduates) were randomly selected from the newly admitted undergraduates who registered in a session (period of 9 months) in Olabisi Onabanjo ...

  2. Life Science Professional Societies Expand Undergraduate Education Efforts

    Science.gov (United States)

    Matyas, Marsha Lakes; Ruedi, Elizabeth A.; Engen, Katie; Chang, Amy L.

    2017-01-01

    The "Vision and Change in Undergraduate Biology Education" reports cite the critical role of professional societies in undergraduate life science education and, since 2008, have called for the increased involvement of professional societies in support of undergraduate education. Our study explored the level of support being provided by…

  3. Experimental biogas power plant at STU in bratislava

    International Nuclear Information System (INIS)

    Pipa, M.; Kment, A.; Janicek, F.

    2012-01-01

    Slovak University of Technology in Bratislava builds the technological research and development center financed by the Structural Funds of the European Union focused on use of different energy sources. In terms of renewable energy is discussed use of biomass energy available through biogas technology with a dry fermentation process. This is a pilot project of experimental physical model, which will be attempting to verify and optimize the pre-project phase parameters and technology already in commercial projects in scaled-down model. The paper deals with the design of this device. (Authors)

  4. Säästu aluseks on elektri kvaliteet / Are Veski

    Index Scriptorium Estoniae

    Veski, Are, 1958-

    2005-01-01

    Autor selgitab, kuidas on võimalik madalama hinna juures pakkuda monopolistlikust konkurendist paremat kvaliteeti, Fortum Elektri ja Eesti Energia elektri hinna võrdlus. Diagramm: Väiketarbijale Fortum soodsam

  5. American Muslim Undergraduates' Views on Evolution

    Science.gov (United States)

    Fouad, Khadija Engelbrecht

    2016-01-01

    A qualitative investigation into American Muslim undergraduates' views on evolution revealed three main positions on evolution: theistic evolution, a belief in special creation of all species, and a belief in special creation of humans with evolution for all non-human species. One can conceive of the manner in which respondents chose their…

  6. Knowledge and Perception of Nigerian University Undergraduates ...

    African Journals Online (AJOL)

    Background and Purpose of Study: Commercial motorcycle is a popular mode of mass transportation in Nigeria, which despite its acknowledged benefits has been associated with health and social problems. It is embraced largely by young Nigerians, including university undergraduates who have not been well studied with ...

  7. The Changing Profile of Undergraduate Business Students.

    Science.gov (United States)

    Green, Kenneth C.

    1996-01-01

    Discusses factors affecting the decline of freshmen college students in undergraduate business programs and the increased enrollment of employed adults taking part-time business classes to advance their careers. Addresses how these trends will affect business schools and the consequences of these trends to the business program enrollment pool.…

  8. Education Improves Plagiarism Detection by Biology Undergraduates

    Science.gov (United States)

    Holt, Emily A.

    2012-01-01

    Regrettably, the sciences are not untouched by the plagiarism affliction that threatens the integrity of budding professionals in classrooms around the world. My research, however, suggests that plagiarism training can improve students' recognition of plagiarism. I found that 148 undergraduate ecology students successfully identified plagiarized…

  9. Evaluating and Selecting Sport Management Undergraduate Programs.

    Science.gov (United States)

    Cuneen, Jacquelyn; Sidwell, M. Joy

    1998-01-01

    States that the accelerated growth of sport management undergraduate programs that began in the 1980s has continued into the current decade. There are currently 180 sport management major programs in American colleges and universities. Describes the sports management approval process and suggests useful strategies to evaluate sport management…

  10. Undergraduate Experiment with Fractal Diffraction Gratings

    Science.gov (United States)

    Monsoriu, Juan A.; Furlan, Walter D.; Pons, Amparo; Barreiro, Juan C.; Gimenez, Marcos H.

    2011-01-01

    We present a simple diffraction experiment with fractal gratings based on the triadic Cantor set. Diffraction by fractals is proposed as a motivating strategy for students of optics in the potential applications of optical processing. Fraunhofer diffraction patterns are obtained using standard equipment present in most undergraduate physics…

  11. undergraduate students' awareness and attitude towards

    African Journals Online (AJOL)

    VICKY

    Items 28 - 37 ... such behaviours. Majority of undergraduate students in our tertiary institutions are youths. Youths in this paper are young people who are between the ages of ... sexual intercourse. Other characteristics of. Nigerian adolescent sexual behaviour according to the. United Nation system in Nigeria (2004) include.

  12. Heat Exchanger Lab for Chemical Engineering Undergraduates

    Science.gov (United States)

    Rajala, Jonathan W.; Evans, Edward A.; Chase, George G.

    2015-01-01

    Third year chemical engineering undergraduate students at The University of Akron designed and fabricated a heat exchanger for a stirred tank as part of a Chemical Engineering Laboratory course. The heat exchanger portion of this course was three weeks of the fifteen week long semester. Students applied concepts of scale-up and dimensional…

  13. Understanding the learning styles of undergraduate physiotherapy ...

    African Journals Online (AJOL)

    Background. Undergraduate students at universities have different learning styles. To perform optimally, both they and their educators should be made aware of their preferred learning styles and problem-solving abilities. Students have different backgrounds, strengths, weaknesses, interests, ambitions, levels of motivation ...

  14. Leadership training for undergraduate medical students.

    Science.gov (United States)

    Maddalena, Victor

    2016-07-04

    Purpose Physicians play an important leadership role in the management and governance of the healthcare system. Yet, many physicians lack formal management and leadership training to prepare them for this challenging role. This Viewpoint article argues that leadership concepts need to be introduced to undergraduate medical students early and throughout their medical education. Design/methodology/approach Leadership is an integral part of medical practice. The recent inclusion of "Leader" competency in the CanMEDS 2015 represents a subtle but important shift from the previous "manager" competency. Providing medical students with the basics of leadership concepts early in their medical education allows them to integrate leadership principles into their professional practice. Findings The Faculty of Medicine at the Memorial University of Newfoundland (MUN) has developed an eight-module, fully online Physician Leadership Certificate for their undergraduate medical education program. This program is cited as an example of an undergraduate medical curriculum that offers leadership training throughout the 4 years of the MD program. Originality/value There are a number of continuing professional development opportunities for physicians in the area of management and leadership. This Viewpoint article challenges undergraduate medical education programs to develop and integrate leadership training in their curricula.

  15. Awareness and Knowledge of Undergraduate Dental Students ...

    African Journals Online (AJOL)

    investigation indicated that awareness and knowledge of undergraduate dental students in relation to sterilization/disinfection methods of extracted human teeth were good. However, deficiencies were observed in relation to teaching the material and methods suitable for sterilization. Keywords: Awareness, Dental student, ...

  16. Dental undergraduate students' knowledge, attitudes and practices ...

    African Journals Online (AJOL)

    Background. Dental students are seen as role-models for promoting good oral health behaviour, yet there is little published evidence in South Africa (SA) that describes student knowledge and attitudes towards their own oral healthcare. Objective. To investigate undergraduate dental therapy and oral hygiene students' ...

  17. Physical activity level among undergraduate students in ...

    African Journals Online (AJOL)

    A cross-sectional study determine physical activity level among 95 undergraduate students at UniSZA using pedometer. Subjects consented and completed socio-demographic details, weight and height were measured. Each subject was supplied with a pedometer and wear it for a week and record steps per day from the ...

  18. Queer Theory in the Undergraduate Writing Course.

    Science.gov (United States)

    Koski, Fran F.

    Teachers committed to breaking the silence on lesbian and gay issues in college-level writing classes can consult a growing body of literature by teachers similarly committed. None of this literature, however, has yet identified ways to bring readers in "queer" theory to the undergraduate writing class. Examining the work of four…

  19. Exploring Foreign Undergraduate Students' Experiences of University

    Science.gov (United States)

    Liu, Danica Wai Yee; Winder, Belinda

    2014-01-01

    Although international students are an important source of income to universities in the UK, the emotional impact of their experiences may be ignored and unacknowledged. This study explored the personal experiences of international students studying for an undergraduate degree in the UK. Semi-structured interviews with five participants were…

  20. Constructive Learning in Undergraduate Linear Algebra

    Science.gov (United States)

    Chandler, Farrah Jackson; Taylor, Dewey T.

    2008-01-01

    In this article we describe a project that we used in our undergraduate linear algebra courses to help our students successfully master fundamental concepts and definitions and generate interest in the course. We describe our philosophy and discuss the projects overall success.

  1. Overhanging amalgam restorations by undergraduate students.

    Science.gov (United States)

    Quadir, Fauzia; Ali Abidi, S Yawar; Ahmed, Shahbaz

    2014-07-01

    To determine the frequency of overhanging margins in amalgam restorations done by undergraduate students at Fatima Jinnah Dental College Hospital, Karachi. Observational study. Department of Operative Dentistry, Fatima Jinnah Dental Hospital, Karachi, from January to June 2009. Patients aged 20 - 45 years attending the Department of Operative Dentistry requiring class-II restorations were included in the study. Whereas, third molars, overlapped proximal surfaces, teeth adjacent to edentulous spaces and pregnant females were excluded. One hundred and fifty patients were selected randomly aged between 20 - 45 years requiring class-II restorations. Posterior Bitewing radiographs were taken and 1600 surfaces were examined. Restorations were done by undergraduate students at Fatima Jinnah Dental College Hospital, Karachi. Chi-square test was utilized to analyze the relationship between location and surface of overhang. Overhanging amalgam restorations were common in the restorations done by undergraduate students (58%). The occurrence of overhangs was more frequent on the distal surfaces (56%) Although the association of amalgam overhangs with the surfaces of the teeth was significant (p p amalgam restorations done by undergraduate students.

  2. Analyzing the Existing Undergraduate Engineering Leadership Skills

    Directory of Open Access Journals (Sweden)

    Hamed M. Almalki

    2016-12-01

    Full Text Available Purpose: Studying and analyzing the undergraduate engineering students' leadership skills to discover their potential leadership strengths and weaknesses. This study will unveil potential ways to enhance the ways we teach engineering leadership. The research has great insights that might assist engineering programs to improve curricula for the purpose of better engineering preparation to meet industry's demands. Methodology and Findings: 441 undergraduate engineering students have been surveyed in two undergraduate engineering programs to discover their leadership skills. The results in both programs were revealing that undergraduate engineering students are lacking behind in the visionary leadership skills compared to directing, including and cultivating leadership styles. Recommendation: A practical framework has been proposed to enhance the lacking leadership skills by utilizing the Matrix of Change (MOC, and the Balanced Scorecard BSC to capture the best leadership scenarios to design virtual simulation environment as per the lacking leadership skills which is the visionary leadership skills in this case. After that, the virtual simulation will be used to provide an experiential learning by replacing human beings with avatars that can be managed or dramatized by real people to enable the creation of live, practical, measurable, and customizable leadership development programs.

  3. Navigating Disruptive Innovation in Undergraduate Business Education

    Science.gov (United States)

    Behara, Ravi S.; Davis, Mark M.

    2015-01-01

    The undergraduate business education landscape is dramatically changing and will continue to do so for the foreseeable future. Many of the changes are being driven by increasing costs, advances in technology, rapid globalization, and an increasingly diverse workforce and customer base, and are occurring simultaneously in both the business world…

  4. A Strategy for Involving Undergraduates in Research

    Science.gov (United States)

    Rogers, Darrin L.; Kranz, Peter L.; Ferguson, Christopher J.

    2012-01-01

    Increasingly, colleges and universities value undergraduate educational research experiences, though traditional apprenticeship models may be infeasible due to faculty time and resource limitations. The "embedded researcher" method can provide research experiences to large numbers of students within traditional courses while generating valuable…

  5. Knowledge and Attitude of Nigerian Female Undergraduate ...

    African Journals Online (AJOL)

    This study examines the knowledge and attitude of female undergraduate students in Nigeria toward STIs/HIV/AIDS pandemic. Quantitative research technique was adopted to examine this objective using University of Lagos female students as study population. The specific research method adopted in the study is ...

  6. Privacy and Ethics in Undergraduate GIS Curricula

    Science.gov (United States)

    Scull, Peter; Burnett, Adam; Dolfi, Emmalee; Goldfarb, Ali; Baum, Peter

    2016-01-01

    The development of location-aware technologies, such as smartphones, raises serious questions regarding locational privacy and the ethical use of geographic data. The degree to which these concepts are taught in undergraduate geographic information science (GISci) courses is unknown. A survey of GISci educators shows that issues of privacy and…

  7. Academic Dishonesty of Undergraduates: Methods of Cheating

    Science.gov (United States)

    Witherspoon, Michelle; Maldonado, Nancy; Lacey, Candace H.

    2010-01-01

    This study examined the frequency of engagement in academic dishonesty among undergraduate students at a large urban college and also explored the use of traditional cheating methods and contemporary cheating methods to determine various forms of cheating, the number of times students cheat, and the number of ways students cheat. The sample was…

  8. Principles for Quality Undergraduate Education in Psychology

    Science.gov (United States)

    American Psychologist, 2011

    2011-01-01

    The principles for undergraduate education in psychology presented here are designed for creating a world-class educational system that provides students with the workplace skills needed in this information age; a solid academic background that prepares them for advanced study in a wide range of fields; and the knowledge, skills, and abilities…

  9. Doing Publishable Research with Undergraduate Students

    Science.gov (United States)

    Fenn, Aju J.; Johnson, Daniel K. N.; Smith, Mark Griffin; Stimpert, J. L.

    2010-01-01

    Many economics majors write a senior thesis. Although this experience can be the pinnacle of their education, publication is not the common standard for undergraduates. The authors describe four approaches that have allowed students to get their work published: (1) identify a topic, such as competitive balance in sports, and have students work on…

  10. Assessment of Health Informatics Competencies in Undergraduate ...

    African Journals Online (AJOL)

    Rwanda Journal Series F: Medicine and Health Sciences Vol. 3 No. 1, 2016. Assessment of Health Informatics Competencies in Undergraduate Training of. Healthcare Professionals in Rwanda. Nishimwe Aurore1*, Mbarushimana Valens1, Ngenzi Joseph Lune1, Marc Nyssen2. 1College of Medicine and Health Sciences, ...

  11. Sexual promiscuity among female undergraduates in tertiary ...

    African Journals Online (AJOL)

    The study focused on sexual promiscuity among female undergraduates and the attendant health implications. It was carried out in the tertiary institutions in Imo State using 415 final year degree students drawn from four institutions in the State. Three research questions were formulated to guide the study. The design was a ...

  12. Teaching safe intravenous cannulation - an undergraduate imperative

    African Journals Online (AJOL)

    Adele

    Abstract. Bloom's taxonomy notes that learning happens in three areas: cognitive, skills and attitudes. In teaching undergraduates this skill one needs to cover all three aspects. The Graduate Entry. Programme at this University hold a compulsory workshop for students over two days for those students entering the clinical.

  13. Undergraduate students' perception and Utilization of electronic ...

    African Journals Online (AJOL)

    An evaluation of undergraduate students' perception and utilization of electronic information resources and services was carried out. The population of the study consisted of all registered library users in the 2014/2015 academic session. The total population of the study was 4, 211 registered users. Accidental sampling ...

  14. Advancing Research on Undergraduate Science Learning

    Science.gov (United States)

    Singer, Susan Rundell

    2013-01-01

    This special issue of "Journal of Research in Science Teaching" reflects conclusions and recommendations in the "Discipline-Based Education Research" (DBER) report and makes a substantial contribution to advancing the field. Research on undergraduate science learning is currently a loose affiliation of related fields. The…

  15. Death metaphors in Korean undergraduate nursing students.

    Science.gov (United States)

    Jo, Kae-Hwa; An, Gyeong-Ju

    2012-01-01

    The purpose of this study was to understand the meaning of death metaphors seen by 133 undergraduate nursing students through open questionnaires and collage artworks, using qualitative content analysis in Korea. The 4 themes emerged: "rest-physical," "fear-psychological," "separating-social," and "new life-spiritual."

  16. Brain Fag Syndrome Among Nigerian Undergraduates: Present ...

    African Journals Online (AJOL)

    Brain Fag Syndrome Among Nigerian Undergraduates: Present Status And Association With Personality And Psychosocial Factors. ... The Brain Fag Syndrome Scale (BFSS), Eysenck Personality Questionnaire (EPQ), 30-item version of the General Health Questionnaire (GHQ-30) and a questionnaire on sociodemographic ...

  17. Interactive Computation for Undergraduates: The Next Generation

    Science.gov (United States)

    Kolan, Amy J.

    2017-05-01

    A generation ago (29 years ago), Leo Kadanoff and Michael Vinson created the Computers, Chaos, and Physics course. A major pedagogical thrust of this course was to help students form and test hypotheses via computer simulation of small problems in physics. Recently, this aspect of the 1987 course has been revived for use with first year physics undergraduate students at St. Olaf College.

  18. Cultures of Undergraduate Teaching at Research Universities.

    Science.gov (United States)

    Serow, Robert C.; Van Dyk, Pamela B.; McComb, Errin M.; Harrold, Adrian T.

    2002-01-01

    Data from five campuses revealed an explicitly oppositional culture among faculty committed to undergraduate teaching, which questions both the Scholarship of Teaching model and the ethos of competitive achievement. The views echo the longstanding populist tradition within U.S. higher education and represent a potential counterforce to the recent…

  19. Female undergraduates' knowledge about cervical carcinoma and ...

    African Journals Online (AJOL)

    Female undergraduates' knowledge about cervical carcinoma and awareness of risk factors and screening in south-western Nigeria. ... Data was analyzed using the SPSS version 17.0 software and the level of significance was P < 0.05. Results: Thirty nine percent of the students were less than 20 years of age. Over 35% of ...

  20. University Undergraduate Students, Perceptions of The Wireless ...

    African Journals Online (AJOL)

    The study focused on Uni versity Undergraduate students' perceptions of the use of the wireless internet of Abubakar Tafawa Balewa University, Bauchi, Nigeria. Using emperical and new field data, this exploratory study investigated the students' perceptions of internet use in relation to library use. The study adopted a ...

  1. Internet Use Among Science Undergraduate Students: A ...

    African Journals Online (AJOL)

    The objective of this study was to identify and determine the extent of students\\' access to, and use of the Internet using the Science Undergraduate Students of University of Ibadan and University of Lagos as a case study. The study also aimed at comparing the rate of use among this group of students and determine which ...

  2. Developing an Undergraduate Hospital Dentistry Program.

    Science.gov (United States)

    Gibson, G. B.; Swanson, A. E.

    1991-01-01

    The process used by the University of British Columbia to establish and improve an undergraduate hospital dentistry program is chronicled. The program's initial structure and objectives, use of student input for program improvement, and the success of the approach in developing an effective program are discussed. (MSE)

  3. Online course Geometrical Optics for undergraduate students

    Science.gov (United States)

    Bakholdin, Alexey; Voznesenskaya, Anna; Romanova, Galina; Ivanova, Tatiana; Tolstoba, Nadezhda; Ezhova, Kseniia; Garshin, Aleksei; Trifonov, Oleg; Sazonenko, Dmitry; Ekimenkova, Alisa

    2017-08-01

    The paper is devoted to the description of the on-line course "Geometrical Optics" placed on the national open-education platform. The course is purposed mainly for undergraduate students in optics and related fields. We discuss key features of the on-line form of this course, the issues of its realization and learning outcomes' evaluation.

  4. Developing an Undergraduate Information Systems Security Track

    Science.gov (United States)

    Sharma, Aditya; Murphy, Marianne C.; Rosso, Mark A.; Grant, Donna

    2013-01-01

    Information Systems Security as a specialized area of study has mostly been taught at the graduate level. This paper highlights the efforts of establishing an Information Systems (IS) Security track at the undergraduate level. As there were many unanswered questions and concerns regarding the Security curriculum, focus areas, the benefit of…

  5. Action Learning in Undergraduate Engineering Thesis Supervision

    Science.gov (United States)

    Stappenbelt, Brad

    2017-01-01

    In the present action learning implementation, twelve action learning sets were conducted over eight years. The action learning sets consisted of students involved in undergraduate engineering research thesis work. The concurrent study accompanying this initiative investigated the influence of the action learning environment on student approaches…

  6. Students' Perceptions of Assessment in Undergraduate Mathematics

    Science.gov (United States)

    Iannone, Paola; Simpson, Adrian

    2013-01-01

    A consistent message emerges from research on undergraduate students' perceptions of assessment which describes traditional assessment as detrimental to learning. However this literature has not included students in the pure sciences. Mathematics education literature advocates the introduction of innovative assessment at university. In this…

  7. How undergraduate students 'negotiate' academic performance ...

    African Journals Online (AJOL)

    This article examines the practices, norms and values that constrain or enable successful participation of undergraduate students at a South African university undergoing a radical change. We look at four constructs about the resources that Wits students draw on when they negotiate their integration into the Wits culture of ...

  8. Assessment Practices in Undergraduate Accounting Programs

    Science.gov (United States)

    Lusher, Anna L.

    2010-01-01

    This study examined accounting program assessment plans at 102 colleges and universities in the United States. The research focused on identifying assessment practices in undergraduate accounting programs by examining the skills and competencies assessed and determining the methods of assessment used. The study also investigated what course and/or…

  9. Narrative Constructions of Whiteness among White Undergraduates

    Science.gov (United States)

    Foste, Zak

    2017-01-01

    This critical narrative inquiry was guided by two overarching research questions. First, this study examined how white undergraduates interpreted and gave meaning to their white racial identities. This line of inquiry sought to understand how participants made sense of their white racial selves, the self in relation to people of color, and the…

  10. Publishing with Undergraduates: Some Further Observations

    Science.gov (United States)

    Griffiths, Mark

    2015-01-01

    This paper provides some additional observations on publishing with undergraduates following the short paper by Hartley (2014) in a previous issue of "Psychology Teaching Review." This paper's main focus relates to how students can develop as scholars by lecturers actively encouraging students to disseminate their written and oral…

  11. Sustainability Matters for Undergraduate Teaching and Learning

    Science.gov (United States)

    Fry, Catherine L.; Wei, Cynthia A.

    2015-01-01

    A growing body of evidence shows that infusing sustainability into undergraduate courses and programs can simultaneously benefit institutional goals, student learning outcomes, and society at large. In addition to being a globally relevant and urgent topic, sustainability can enhance learning of disciplinary concepts and development of broad…

  12. Guaiacol Peroxidase Zymography for the Undergraduate Laboratory

    Science.gov (United States)

    Wilkesman, Jeff; Castro, Diana; Contreras, Lellys M.; Kurz, Liliana

    2014-01-01

    This laboratory exercise presents a novel way to introduce undergraduate students to the specific detection of enzymatic activity by electrophoresis. First, students prepare a crude peroxidase extract and then analyze the homogenate via electrophoresis. Zymography, that is, a SDS-PAGE method to detect enzyme activity, is used to specifically…

  13. Metabolic Syndrome among Undergraduate Students Attending ...

    African Journals Online (AJOL)

    1Laboratory Department, College of Applied Medical Sciences, 2Department of Community Medicine - College of Medicine, ... undergraduate students in three Sudanese universities. Methods: A total of 384 first-year ... Keywords: Metabolic syndrome, Obesity, Hypertension, Diabetes, Dyslipidemia, Anthropometric. Tropical ...

  14. Developing Undergraduate Coursework in Autism Spectrum Disorders

    Science.gov (United States)

    Masterson, Tracy Loye; Dimitriou, Francine; Turko, Kristine; McPartland, James

    2014-01-01

    With rates of autism spectrum disorders (ASD) continuing to rise alongside improvements in early identification and treatment, service providers are in great demand. Providing undergraduate students with opportunities for education and applied experiences with autism spectrum disorders (ASD) can help fill a valuable niche in the autism community.…

  15. Student Performance in Undergraduate Economics Courses

    Science.gov (United States)

    Mumford, Kevin J.; Ohland, Matthew W.

    2011-01-01

    Using undergraduate student records from six large public universities from 1990 to 2003, the authors analyze the characteristics and performance of students by major in two economics courses: Principles of Microeconomics and Intermediate Microeconomics. This article documents important differences across students by major in the principles course…

  16. Electronic learning readiness assessment of Nigerian Undergraduates

    African Journals Online (AJOL)

    learning. Two hypotheses were evolved to give direction to this study. The study was a pilot study and the University of Lagos was purposively selected. It was targeted at undergraduate students of the University of Lagos. A simple random ...

  17. Developing Flexible Procedural Knowledge in Undergraduate Calculus

    Science.gov (United States)

    Maciejewski, Wes; Star, Jon R.

    2016-01-01

    Mathematics experts often choose appropriate procedures to produce an efficient or elegant solution to a mathematical task. This "flexible procedural knowledge" distinguishes novice and expert procedural performances. This article reports on an intervention intended to aid the development of undergraduate calculus students' flexible use…

  18. Factors Influencing Substance Abuse among Undergraduate ...

    African Journals Online (AJOL)

    The study investigated the factors influencing substance abuse amongundergraduate students in Osun State; Nigeria. A sample of 1, 200undergraduate students were randomly selected from three tertiaryinstitution in Osun State. Factors Influencing Substance Abuse Questionnaire (FISA) was developed by the researcher ...

  19. Formative assessment promotes learning in undergraduate clinical ...

    African Journals Online (AJOL)

    Introduction. Clinical clerkships, typically situated in environments lacking educational structure, form the backbone of undergraduate medical training. The imperative to develop strategies that enhance learning in this context is apparent. This study explored the impact of longitudinal bedside formative assessment on ...

  20. Centrifugal Pump Experiment for Chemical Engineering Undergraduates

    Science.gov (United States)

    Vanderslice, Nicholas; Oberto, Richard; Marrero, Thomas R.

    2012-01-01

    The purpose of this paper is to describe a Centrifugal Pump Experiment that provided an experiential learning experience to chemical engineering undergraduates at the University of Missouri in the spring of 2010 in the Unit Operations Laboratory course. Lab equipment was used by senior students with computer-based data and control technology. In…

  1. Quantum mechanical wavefunction: visualization at undergraduate level

    Science.gov (United States)

    Chhabra, Mahima; Das, Ritwick

    2017-01-01

    Quantum mechanics (QM) forms the most crucial ingredient of modern-era physical science curricula at undergraduate level. The abstract ideas involved in QM related concepts pose a challenge towards appropriate visualization as a consequence of their counter-intuitive nature and lack of experiment-assisted visualization tools. At the heart of the quantum mechanical formulation lies the concept of ‘wavefunction’, which forms the basis for understanding the behavior of physical systems. At undergraduate level, the concept of ‘wavefunction’ is introduced in an abstract framework using mathematical tools and therefore opens up an enormous scope for alternative conceptions and erroneous visualization. The present work is an attempt towards exploring the visualization models constructed by undergraduate students for appreciating the concept of ‘wavefunction’. We present a qualitative analysis of the data obtained from administering a questionnaire containing four visualization based questions on the topic of ‘wavefunction’ to a group of ten undergraduate-level students at an institute in India which excels in teaching and research of basic sciences. Based on the written responses, all ten students were interviewed in detail to unravel the exact areas of difficulty in visualization of ‘wavefunction’. The outcome of present study not only reveals the gray areas in students’ conceptualization, but also provides a plausible route to address the issues at the pedagogical level within the classroom.

  2. What Undergraduates Want to Know about Homosexuality.

    Science.gov (United States)

    McCord, David M.; Herzog, Harold A.

    1991-01-01

    Describes a program in which undergraduate psychology students submitted questions about homosexuality prior to a panel discussion by a gay rights organization. Suggests that such a program helps students understand that discrimination and abuse are not justifiable responses to homosexuals. Includes questions about family relationships,…

  3. Influence Of Agriculture Undergraduates\\' Personal Characteristics ...

    African Journals Online (AJOL)

    The paper examines the influence of agriculture undergraduates\\' personal characteristics on their perception of agricultural extension. Data for the study was collected with the aid of questionnaire from 109 randomly selected respondents in the School of Agriculture and Agricultural Technology of the Federal University of ...

  4. Perceptions of Undergraduate Construction Students on Industrial ...

    African Journals Online (AJOL)

    Perceptions of Undergraduate Construction Students on Industrial Training in Ghana. ... The study employed a structured questionnaire survey of 185 final year construction students of the Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana. Data analysis was based on mean scores of factors ...

  5. International Program for Undergraduate Business Majors.

    Science.gov (United States)

    Milton, Tom

    This report describes a project to create an interdisciplinary specialization in international business for undergraduate business majors and to internationalize the existing business program at Mercy College (New York). Objectives were to help students acquire a working knowledge of the international dimension of business, appreciate…

  6. Psychosocial factors predisposing university undergraduates to ...

    African Journals Online (AJOL)

    Therefore, for mentoring relationship to be effective and successful, locus of control (internal locus of control), age and year of study of university undergraduates should be considered. This is believed will enhance and develop individual and management skills; reduce stress, increase academic performance, and reduction ...

  7. Leading Undergraduate Research Projects in Mathematical Modeling

    Science.gov (United States)

    Seshaiyer, Padmanabhan

    2017-01-01

    In this article, we provide some useful perspectives and experiences in mentoring students in undergraduate research (UR) in mathematical modeling using differential equations. To engage students in this topic, we present a systematic approach to the creation of rich problems from real-world phenomena; present mathematical models that are derived…

  8. Assessing Aspects of Undergraduate Research through Journaling

    Science.gov (United States)

    Mimbs, Debra

    2017-01-01

    It is necessary while mentoring students in undergraduate research to conduct assessments in order to determine how well the research experience is progressing. It may also be necessary to assign a grade to a student's performance at the conclusion of such a venture. Journaling may be used both as a formative assessment tool and as a summative…

  9. Undergraduate Student Intentions for Postgraduate Study

    Science.gov (United States)

    Jepsen, Denise Mary; Neumann, Ruth

    2010-01-01

    Little is known of how and when undergraduate students decide to progress to postgraduate studies. This study examined the effect of a single semester on intentions to undertake postgraduate study. The study was conducted twice in two years using approximately 120 students enrolled in a third year "Behaviour in Organisations" unit at a…

  10. New Project System for Undergraduate Electronic Engineering

    Science.gov (United States)

    Chiu, Dirk M.; Chiu, Shen Y.

    2005-01-01

    A new approach to projects for undergraduate electronic engineering in an Australian university has been applied successfully for over 10 years. This approach has a number of projects running over three year period. Feedback from past graduates and their managers has confirmed that these projects train the students well, giving them the ability…

  11. Introductory Linear Regression Programs in Undergraduate Chemistry.

    Science.gov (United States)

    Gale, Robert J.

    1982-01-01

    Presented are simple programs in BASIC and FORTRAN to apply the method of least squares. They calculate gradients and intercepts and express errors as standard deviations. An introduction of undergraduate students to such programs in a chemistry class is reviewed, and issues instructors should be aware of are noted. (MP)

  12. Undergraduate medical research: the student perspective.

    LENUS (Irish Health Repository)

    Burgoyne, Louise N

    2010-01-01

    Research training is essential in a modern undergraduate medical curriculum. Our evaluation aimed to (a) gauge students\\' awareness of research activities, (b) compare students\\' perceptions of their transferable and research-specific skills competencies, (c) determine students\\' motivation for research and (d) obtain students\\' personal views on doing research.

  13. Bioinformatics in Undergraduate Education: Practical Examples

    Science.gov (United States)

    Boyle, John A.

    2004-01-01

    Bioinformatics has emerged as an important research tool in recent years. The ability to mine large databases for relevant information has become increasingly central to many different aspects of biochemistry and molecular biology. It is important that undergraduates be introduced to the available information and methodologies. We present a…

  14. Mathematical Modeling in the Undergraduate Curriculum

    Science.gov (United States)

    Toews, Carl

    2012-01-01

    Mathematical modeling occupies an unusual space in the undergraduate mathematics curriculum: typically an "advanced" course, it nonetheless has little to do with formal proof, the usual hallmark of advanced mathematics. Mathematics departments are thus forced to decide what role they want the modeling course to play, both as a component of the…

  15. Interrogating patient-centredness in undergraduate medical ...

    African Journals Online (AJOL)

    The teaching and learning of such a multidimensional construct require a comprehensive approach in order to be effective and the IBM seems to be a useful and applicable theoretical model to apply. Keywords: integrated behaviour model, patient-centredness, teaching and learning, undergraduate medical curriculum ...

  16. A Green Marketing Course for Business Undergraduates

    Science.gov (United States)

    Rudell, Fredrica

    2011-01-01

    Since the 1970s, periodic calls have been made for incorporation of sustainability issues into marketing and other business courses. Now more than ever, we need to prepare students for careers in the green economy. This article will describe the author's experience teaching a Green Marketing course to business undergraduates. A review of content,…

  17. Child Psychiatry Curricula in Undergraduate Medical Education

    Science.gov (United States)

    Sawyer, Michael Gifford; Giesen, Femke; Walter, Garry

    2008-01-01

    A study to review the amount of time devoted to child psychiatry in undergraduate medical education is conducted. Results conclude that relatively low priority is given to child psychiatry in medical education with suggestions for international teaching standards on the subject.

  18. Comparative assessment of university chemistry undergraduate ...

    African Journals Online (AJOL)

    A comparative analysis of the structure of undergraduate chemistry curricula of universities in the southwest of Nigeria with a view to establishing the relative proportion of the different areas of chemistry each curriculum accommodates. It is a qualitative research, involving content analysis with a partial quantitative analysis ...

  19. Engaging Undergraduates through Interdisciplinary Research in Nanotechnology

    Science.gov (United States)

    Goonewardene, Anura U.; Offutt, Christine; Whitling, Jacqueline; Woodhouse, Donald

    2012-01-01

    To recruit and retain more students in all science disciplines at our small (5,000 student) public university, we implemented an interdisciplinary strategy focusing on nanotechnology and enhanced undergraduate research. Inherently interdisciplinary, the novelty of nanotechnology and its growing career potential appeal to students. To engage…

  20. sexual promiscuity among female undergraduates in tertiary ...

    African Journals Online (AJOL)

    Elizabeth Egbochuku

    female undergraduates, the causes and effects of such unhealthy behaviour on healthy living. .... to get the money from. Being in a precarious condition, they turn to prostitution based on the fact that they are looking for money to settle their school bills. Equally, Misi ... Drugs like cocaine, marijuana and alcohol are used most.

  1. 330 Factors Influencing Substance Abuse among Undergraduate ...

    African Journals Online (AJOL)

    User

    2010-10-17

    Oct 17, 2010 ... hallucinating drugs such as Indian hemp and cocaine. These drugs will intoxicate the cult members and it will make them to be bold, and under the influence of drug they can kill or destroy their mates or lecturers. Tobacco is another substance that it is easily been abused by many undergraduates and it has ...

  2. NOAA's Undergraduate Scholarship Program Outcomes and Opportunities

    Science.gov (United States)

    Kaplan, M.; Jabanoski, K.; Christenson, T.

    2017-12-01

    NOAA supports about 115 - 150 undergraduates per year through the Ernest F. Hollings Scholarship and the Educational Partnership Program Undergraduate Scholarship. These programs provide tuition support and paid summer internships at NOAA to exceptional students majoring in the geosciences. Multiple methods were used to evaluate program outcomes and track the career trajectories, including mining LinkedIn data and conducting evaluation surveys of recipients as well as students who applied but did not receive the award. Results show more than 75% of scholars continued on to graduate school, primarily in a NOAA mission fields. This compared to only 56% of nonrecipients. More than 60% of alumni had at least one professional record, with the most alumni working in private industry, followed by nongovernmental organizations and federal, state and local government. The evaluation identified 77 other scholarship programs applied to by NOAA scholarship recipients. The most commonly reported program was the NSF Research Experiences for Undergraduates (REU) for which 20% of scholars applied and 46% of applications were successful. Other common scholarships included the Goldwater Scholarship (received by 5% of NOAA scholars) and the Udall Scholarship (received by 4% of scholars). In the most recent class of 118 undergraduate scholars, 24% reported having another research experience by the time they arrived for orientation at the end of their sophomore year. These results suggest coordination across scholarship opportunities may be useful to engage and retain students in geoscience fields.

  3. Determinants of Happiness in Undergraduate University Students

    Science.gov (United States)

    Flynn, Deborah M.; MacLeod, Stephanie

    2015-01-01

    This study explored the relationship between happiness, and six other life domains: Academic Success, Financial Security, Familial Support, Living Environment, Self-Image and Social Relations. Participants were one hundred and ninety- two students from a small undergraduate university. The purpose of the study was to determine which life domain…

  4. Cognitive diversity in undergraduate engineering: Dyslexia

    Science.gov (United States)

    Fitzpatrick, Velvet R.

    In the United States, institutions have established multiple programs and initiatives aimed at increasing the diversity of both faculty and students in engineering as means to produce a workforce that will better serve society. However, there are two major problems in addressing engineering student diversity. First, the engineering education research community has paid little attention to date as to how engineering education research characterizes diversity in its broadest sense. Second, research on persons with disabilities in undergraduates engineering, a population of interests within diversity, is minimal. Available disability studies tend to be skewed toward physical disabilities, leading to a neglect of cognitive differences such as learning disabilities (LD). In addition, disability research questions and study designs are inherently steeped in ability bias. The purpose of this dissertation is to explore the meaning of ability for students with dyslexia while in undergraduate engineering and establish the significance of cognitive diversity, focusing on LD and more specifically dyslexia, in undergraduate engineering education and answer the following research question: How do undergraduate engineering students with dyslexia experience ability while pursuing and persisting in engineering? The motivation was to lay the groundwork for future engineering education studies on undergraduate students with LD in general but dyslexia in specific. The first goal was to conduct a critical literature review pertaining to the academic strengths of undergraduate students with LD, specifically, dyslexia and the second goal was to describe how undergraduate engineering students with dyslexia experience ability. The intent was not to redefine dyslexia or disability. The intent is to provide an inclusive account of dyslexia, weakness and strengths, within the field of engineering education. This study was conducted from a qualitative inquiry approach, within the social

  5. Undergraduate medical students’ empathy: current perspectives

    Science.gov (United States)

    Quince, Thelma; Thiemann, Pia; Benson, John; Hyde, Sarah

    2016-01-01

    Empathy is important to patient care. It enhances patients’ satisfaction, comfort, self-efficacy, and trust which in turn may facilitate better diagnosis, shared decision making, and therapy adherence. Empathetic doctors experience greater job satisfaction and psychological well-being. Understanding the development of empathy of tomorrow’s health care professionals is important. However, clinical empathy is poorly defined and difficult to measure, while ways to enhance it remain unclear. This review examines empathy among undergraduate medical students, focusing upon three main questions: How is empathy measured? This section discusses the problems of assessing empathy and outlines the utility of the Jefferson Scale of Empathy – Student Version and Davis’s Interpersonal Reactivity Index. Both have been used widely to assess medical students’ empathy. Does empathy change during undergraduate medical education? The trajectory of empathy during undergraduate medical education has been and continues to be debated. Potential reasons for contrasting results of studies are outlined. What factors may influence the development of empathy? Although the influence of sex is widely recognized, the impact of culture, psychological well-being, and aspects of undergraduate curricula are less well understood. This review identifies three interrelated issues for future research into undergraduate medical students’ empathy. First, the need for greater clarity of definition, recognizing that empathy is multidimensional. Second, the need to develop meaningful ways of measuring empathy which include its component dimensions and which are relevant to patients’ experiences. Medical education research has generally relied upon single, self-report instruments, which have utility across large populations but are limited. Finally, there is a need for greater methodological rigor in investigating the possible determinants of clinical empathy in medical education. Greater

  6. Dental fluorosis in children attending basic health units Fluorose dentária em crianças usuárias de unidades básicas de saúde

    Directory of Open Access Journals (Sweden)

    Cristiane de Andrade Janene Gonini

    2004-09-01

    Full Text Available OBJECTIVES: The purpose of this study was to determine the prevalence and severity of dental fluorosis among patients attending basic health units in Londrina. METHODS: Five basic health units of the urban area were randomly selected and 434 children attending these units, born between 1986 and 1989 (9 to 12 years of age, were examined. Diagnosis of dental fluorosis was performed by means of the Thylstrup and Fejerskov (TF Index. Oral examinations were carried out by 5 previously trained dentists with the patients lying in the dental chair, under artificial light, preceded by prophylaxis, isolation with cotton rolls and air-drying of the teeth. Ten percent of the sample was reexamined and an almost perfect agreement on diagnostic criteria was obtained either on the intra-examiner or inter-examiner evaluation (K=1.00, pOBJETIVOS: Estabelecer a freqüência e severidade de fluorose dentária entre pacientes de clínicas odontológicas da rede de Unidades Básicas de Saúde de Londrina. MATERIAIS E MÉTODOS: Cinco Unidades Básicas de Saúde - zona urbana - foram sorteadas e 434 pacientes das clínicas odontológicas destas unidades de saúde, nascidos entre 1986 e 1989 (9 a 12 anos de idade, foram examinados. O diagnóstico da fluorose dentária foi feito utilizando-se o Índice Thylstrup e Fejerskov (TF. Os exames bucais foram realizados por cinco cirurgiões dentistas previamente treinados, com o paciente deitado, utilizando-se iluminação artificial, tendo-se procedido profilaxia, isolamento relativo e secagem dos dentes. Dez por cento da amostra foi reexaminada, tendo-se obtido concordância quase perfeita nos critérios de diagnóstico, tanto intra-examinador como inter-examinadores (K=1.00, p< 0.0001. RESULTADOS: A freqüência de fluorose dentária verificada foi de 91.0%, com 87.8% dos indivíduos classificados como TF grau 2 ou menor. CONCLUSÕES: A alta freqüência encontrada, embora a severidade tenha sido baixa, aponta a necessidade

  7. A importância da interação entre odontopediatrias e pediatrias no manejo de dentes natais e neonatais The importance of interaction of pediatric dentists and pediatricians in the management of natal and neonatal teeth

    Directory of Open Access Journals (Sweden)

    Michele Baffi Diniz

    2008-03-01

    Full Text Available OBJETIVO: Apresentar revisão de literatura sobre dentes natais e neonatais, abordando características clínicas, fatores etiológicos, medidas terapêuticas e a importância do conhecimento desta anomalia, por odontopediatras e pediatras. FONTES DE DADOS: Foram selecionados os artigos mais relevantes sobre o tema, desde 1950 até 2006, pesquisados no Medline e na Bibliografia Brasileira em Odontologia (BBO, além de livros de pertinentes. SÍNTESE DOS DADOS: Os dentes natais e neonatais consistem em uma anomalia de erupção, sendo caracterizados por seu irrompimento na cavidade oral durante o período intra-uterino ou no primeiro mês de vida respectivamente, podendo fazer parte da dentição decídua normal ou supranumerária. Esses dentes, em geral, apresentam bordos cortantes e podem estar relacionados ao aparecimento de ulcerações na base da língua do bebê e/ou no seio materno, comprometendo a amamentação. A fraca implantação óssea desses dentes favorece sua grande mobilidade, tornando-se, assim, um fator de risco à sua aspiração ou deglutição pela criança. A abordagem terapêutica depende da dentição à qual pertence o dente e dos possíveis problemas que este pode causar à saúde da criança ou da mãe. CONCLUSÕES: O conhecimento sobre as características clínicas e os possíveis distúrbios aos quais os dentes natais e neonatais estão relacionados por odontopediatras e pediatras possibilita a interação necessária para o diagnóstico precoce e a abordagem integral da criança.OBJECTIVE: To review available data about natal and neonatal teeth, emphasizing clinical characteristics, etiological factors, treatment, and the importance of the knowledge about this anomaly by pediatric dentists and pediatricians. DATA SOURCES: The most relevant articles published on the subject were selected, from 1950 to 2006, browsed on Medline, Brazilian Bibliografy of Odontology (BBO and Dentistry books. DATA SYNTHESIS: Natal and

  8. Quantificação computadorizada dos índices de placa e cálculo dentais da imagem digital da superfície vestibular dos dentes de cães

    Directory of Open Access Journals (Sweden)

    Samira L. Abdalla

    2009-08-01

    Full Text Available A doença periodontal é causada pelo acúmulo de placa bacteriana sobre os dentes e estruturas adjacentes. Para sua mensuração têm sido formulados índices que consideram a quantidade e intensidade de placa bacteriana (PB e de cálculo dental (CD existentes na superfície dentária por meio de avaliação visual subjetiva. O presente estudo tem como objetivo avaliar o método de análise computadorizada para medição de área de PB e CD nos dentes de cães através da comparação com a avaliação visual. Foram utilizados 10 cães Beagles, três machos e sete fêmeas, com similares características e mantidos sob o mesmo manejo e dieta alimentar. As avaliações das superfícies vestibulares dos dentes ocorreram antes da profilaxia dentária, que foi realizada sob anestesia geral inalatória, e após sete dias para PB e após 28 dias para CD. A avaliação computadorizada da área de CD demonstrou ser estatisticamente melhor em relação à avaliação visual antes e após a profilaxia; entretanto, não demonstrou diferença significante na avaliação da PB. Concluiu-se que a avaliação computadorizada é vantajosa em relação à visual por conferir maior precisão na obtenção da proporção entre área total do dente e área acometida, mostrando-se estatistticamente superior na quantificação do CD após 28 dias.Periodontal disease is caused by dental plaque accumulation on teeth and adjacent structures. Indices have been formulated for its measurement considering the amount and intensity of dental plaque (DP and dental calculus (C on the surface of teeth through subjective visual evaluation. This study aims at assessing the computerized analysis method for measurement of DP and C areas on the teeth of dogs by comparing it with the visual evaluation in the oral cavity. Ten beagle dogs with similar characteristics and kept under the same management and diet were used. Evaluations of oral cavity occurred before surgical prophylaxis

  9. Vigilância epidemiológica da fluorose dentária em município de clima tropical com água de abastecimento público fluoretada

    Directory of Open Access Journals (Sweden)

    Marcoeli Silva de Moura

    2016-04-01

    Full Text Available Resumo O objetivo deste estudo foi avaliar a prevalência e a severidade de fluorose dentária em escolares de 11 a 14 anos de idade em Teresina (PI Brasil, município de clima tropical com água de abastecimento público fluoretada. Estudo do tipo observacional transversal no qual foram avaliadas 571 crianças distribuídas nas redes pública e particular de ensino. A coleta de dados foi realizada nas unidades escolares, após recolhimento do Termo de Consentimento Livre e Esclarecido (TCLE e questionário respondido pelos pais referentes às condições socioeconômicas e demográficas e aos hábitos de higiene bucal. O exame dentário foi realizado por um cirurgião-dentista calibrado. O índice aplicado foi o Thylstrup e Fejerskov (TF. A prevalência de fluorose foi de 77,9%, e apenas 12,5% das crianças acometidas apresentaram TF ≥ 3, grau com comprometimento estético. Os pré-molares foram os dentes mais afetados pela fluorose. Dentre os escolares com maior severidade de fluorose, 98,6% dos pertenciam à classe social mais baixa (>B2, 91,5% nasceram e sempre moraram em Teresina, 94,4% consumiam água de abastecimento fluoretada, 76% usaram dentifrício infantil e 64% as mães relataram que engoliam dentifrício. A prevalência de fluorose foi elevada, mas com baixa severidade, em indivíduos expostos à fluoretação desde o nascimento.

  10. Assessment of the rate of premolar extraction space closure in the maxillary arch with the AcceleDent Aura appliance vs no appliance in adolescents: A single-blind randomized clinical trial.

    Science.gov (United States)

    Miles, Peter; Fisher, Elizabeth; Pandis, Nikolaos

    2018-01-01

    The purpose of this 2-arm parallel trial was to assess the effect of the AcceleDent Aura appliance (OrthoAccel Technologies, Houston, Tex) on the rate of maxillary premolar extraction space closure in adolescent patients. Forty Class II adolescents treated with full fixed appliances and maxillary premolar extractions participated in this randomized clinical trial. They were recruited in a private practice and treated by 1 clinician. Randomization was accomplished in blocks of 10 patients assigned to either a no-appliance group or the AcceleDent Aura appliance group with the allocations concealed in opaque, sealed envelopes. Both the operator and the outcome assessor were blinded; however, it was not feasible to blind the patients. Models were taken of the maxillary arch at the start of space closure and just before complete space closure. The space was measured parallel to the occlusal plane from the cusp tips of the teeth mesial and distal to the extraction spaces. There was no clinically (0.05 mm per month; 95% confidence interval [CI], -0.24, 0.34) or statistically significant difference in the rate of space closure (P = 0.74). In both the univariable and multivariable analyses, the mean rate of tooth movement was slower by 0.13 mm per month (95% CI, -.26, .005) on the left side compared with the right side, but this was not statistically significant (P = 0.06). The AcceleDent Aura appliance had no effect on the rate of maxillary premolar extraction space closure. Only a few participants were considered to be good compliers with the appliance. However, the rate of space closure in the good compliers was similar to the overall group and did not appear to influence the result. This trial was not registered. The protocol was not published before trial commencement. Copyright © 2017 American Association of Orthodontists. Published by Elsevier Inc. All rights reserved.

  11. Prevalência de fluorose dentária em escolares de Brasília - Distrito Federal Prevalence of dental fluorosis in school children from Brasília - Federal District

    Directory of Open Access Journals (Sweden)

    Danielle Lopes CAMPOS

    1998-07-01

    Full Text Available Com a finalidade de avaliar a prevalência de fluorose dentária, foi realizado levantamento epidemiológico em Brasília, Distrito Federal, comunidade na qual o teor de flúor na água de abastecimento público é de 0,8 ppm. Foram examinadas 833 crianças de ambos os sexos com idades variando entre 8 e 12 anos, escolares e residentes em Brasília desde o nascimento. Os exames foram realizados em escolas públicas, em cadeira comum, sob luz natural e campo seco obtido com auxílio de gaze. Por meio do exame dos dentes permanentes anteriores superiores foi levantado o índice de fluorose entre os sexos. O percentual de crianças livres de fluorose apresentou-se elevado (85,36%, enquanto 14,64% mostraram níveis de fluorose dentária entre muito leve e moderado.An epidemiologic study was conducted to evaluate the prevalence of dental fluorosis in Brasilia - Federal District, a community where fluoride concentration is 0.8 ppm in drinking water. The sample consisted of 833 school children of both sexes, aged between 8 and 12, who have been living in Brasilia since birth. The anterior upper permanent teeth were examined and HOROWITZ fluorosis index was applied to evaluate pathological occurrences. No sex differences were observed in dental fluorosis prevalence. The authors found a high number of dental fluorosis free children (85.36% and 14.64% of the sample showed light and moderate levels of fluorosis.

  12. Conjuntivite bacteriana secundária à doença dentária em chinchilas (Chinchilla lanigera Bacterial conjunctivitis secondary to dental disease in chinchillas (Chinchilla lanigera

    Directory of Open Access Journals (Sweden)

    Ricardo Barbosa Lucena

    2012-11-01

    Full Text Available São relatados três casos de conjuntivite bacteriana associada à doença dentária grave em chinchilas. Todas as chinchilas afetadas tinham histórico de emagrecimento, hipersalivação e epífora, que progrediu para exsudação ocular purulenta. Durante a necropsia, foi constatado marcado alongamento da coroa clínica dos incisivos e molares, e crescimento do ápice dentário, causando deformação óssea e compressão do canal lacrimal. Histologicamente, observou-se infiltrado de neutrófilos na conjuntiva e pálpebras. Cultivo microbiológico do exsudato ocular revelou crescimento de Staphylococcus coagulase-positiva . Uma compressão do canal lacrimal pelo crescimento dentário excessivo impediu a drenagem das lágrimas, resultando em epífora. Esse é um importante fator predisponente para infecção bacteriana ocular em chinchilas.Three cases of bacterial conjunctivitis associated with severe dental disease in chinchillas are described. All affected chinchillas had a history of weight loss, ptyalism, and epiphora which progressed to suppurative ocular exsudation. At necropsy incisor and molar teeth revealed marked elongation of the clinical crown and overgrowth of the dental apexes resulting in deformation of the tear ducts. Histologically, there was neutrophilic infiltrate in the conjunctiva and eyelid skin. Microbiological culture carried out in samples from the ocular exsudate yielded Staphylococcus coagulase-positive. Compression of the lacrimal duct by dental overgrowth compromised tear draining and resulting in epiphora. This is a major predisposing factor inducing bacterial ocular infection in chinchillas.

  13. Apresentação de um programa de computador para calcular a discrepância de tamanho dentário de Bolton Presentation of a computer program to calculate the Bolton’s tooth size discrepancy

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    Adriano Francisco de Lucca Facholli

    2006-04-01

    Full Text Available O diagnóstico da discrepância de tamanho dentário de Bolton é de fundamental importância para a boa finalização do tratamento ortodôntico. Por meio da medição dos dentes, com o auxílio de um paquímetro digital e a inserção dos valores no programa de computador desenvolvido e apresentado pelos autores, o trabalho do ortodontista fica mais simples, pois não é necessário realizar nenhum cálculo matemático ou auxiliar-se de nenhuma tabela de valores, eliminando-se a probabilidade de erros. Além disso, o programa apresenta a localização da discrepância por segmento - total, anterior e posterior - e individual - por elemento dentário, permitindo assim maior precisão na planificação das estratégias para a resolução dos problemas, caminhando para um tratamento ortodôntico de sucesso.The diagnosis of the Bolton’s Tooth Size Discrepancy is of fundamental importance for the good orthodontics finalization. Through the measurement of the teeth with the aid of a digital caliper and the insert of the values in the computer program developed by the authors and which that it will be presented in this article, the orthodontist’s work is simpler, because it is not necessary to accomplish any mathematical calculation or to aid of any table of values, eliminating the probability of mistakes. Besides, the program presents the location of the discrepancy for segment - overall, anterior and posterior - and individual - for dental element, allowing larger precision in the planning of the strategies for the resolution of the problems and walking for a success orthodontic treatment.

  14. The Geosciences Division of the Council on Undergraduate Research (GeoCUR): Supporting Faculty that Mentor Undergraduate Researchers

    Science.gov (United States)

    Fox, L. K.; Guertin, L. A.; Manley, P. L.; Fortner, S. K.

    2012-12-01

    Undergraduate research is a proven effective pedagogy that has a number of benefits including: enhancing student learning through mentoring relationships with faculty; increasing retention; increasing enrollment in graduate programs; developing critical thinking, creativity, problem solving and intellectual independence; and, developing an understanding of research methodology. Undergraduate research also has been demonstrated in preparing students for careers. In addition to developing disciplinary and technical expertise, participation in undergraduate research helps students improve communication skills (written, oral, and graphical) and time management. Early involvement in undergraduate research improves retention and, for those engaged at the 2YC level, helps students successfully transfers to 4YC. The Geosciences Division of the Council on Undergraduate Research (GeoCUR) supports faculty in their development of undergraduate research programs at all levels. GeoCUR leads workshops for new and future faculty covering all aspects of undergraduate research including incorporating research into coursework, project design, mentoring students, sustaining programs, and funding sources. GeoCUR members support new faculty by providing a range of services including: peer-review of grant proposals; advice on establishing an undergraduate research program; balancing teaching and research demands; and networking with other geoscientist. GeoCUR has also developed web resources that support faculty and departments in development of undergraduate research programs (http://serc.carleton.edu/NAGTWorkshops/undergraduate_research/index.html). This presentation will describe the services provided by GeoCUR and highlight examples of programs and resources available to geoscientists in all career stages for effective undergraduate research mentoring and development.

  15. Prevalência e severidade da cárie dentária em escolares de seis e doze anos de idade

    Directory of Open Access Journals (Sweden)

    Traebert Jefferson Luiz

    2001-01-01

    Full Text Available OBJETIVO: Investigar a prevalência e a severidade da cárie dentária e as necessidades de tratamento em escolares de 6 e 12 anos de idade, comparando-se os alunos de escolas públicas com os de privadas. MÉTODOS: Foi estudada a população de escolares do município de Blumenau, SC, a partir de uma amostra de 1.473 escolares, representativa de quatro estratos: escolares de 6 anos de escolas públicas, de 6 anos de escolas privadas, de 12 anos de escolas públicas e de 12 anos de escolas privadas. Utilizaram-se os critérios de diagnóstico da Organização Mundial de Saúde (1997. RESULTADOS: A prevalência de cárie na dentição decídua em escolares de 6 anos foi de 60,9% em escolas públicas e de 34,9% em escolas privadas (p<0,0001. O índice CEO-D aos 6 anos de idade foi de 2,98 em escolas públicas, 1,32 em privadas (p<0,0001 e 2,42 na população estudada. A prevalência de cárie na dentição permanente em escolares de 12 anos foi de 54,7%, e o índice CPO-D foi de 1,46 para as escolas públicas. A baixa taxa de resposta em escolas privadas referente ao estrato de 12 anos de idade inviabilizou o relato dos resultados para este estrato. CONCLUSÕES: A prevalência de cárie e as necessidades de tratamento em escolares de 6 anos de idade de Blumenau são baixas, detectando-se diferenças estatisticamente significativas entre crianças de escolas públicas e privadas, favoráveis a estas últimas. Também são baixas a prevalência e as necessidades de tratamento em crianças de 12 anos de idade de escolas públicas.

  16. Prevalência das anomalias dentárias em pacientes submetidos a tratamento ortodôntico Prevalent dental disgenesis in patients under orthodontich treatment

    Directory of Open Access Journals (Sweden)

    Jurema Freire Lisboa de Castro

    2004-10-01

    Full Text Available O presente estudo teve como objetivo avaliar a prevalência das disgenesias dentárias em pacientes submetidos a tratamento ortodôntico na cidade do Recife, no período de 1991 a 1999, por meio da observação de dados contidos em prontuários e do exame radiográfico. Foram examinados 551 prontuários, dos quais 124 (22,5% apresentaram essas alterações.Os resultados demonstraram que 44 (7,99% das disgenesias estavam presentes no gênero masculino e que dois pacientes deste grupo apresentaram mais de um tipo das mesmas. Outras 80 (14,52% pertenciam ao gênero feminino, sendo que 3 pacientes deste grupo apresentaram também mais de uma alteração; dessa forma ocorreram 130 disgenesias. A hipodontia foi a mais prevalente com (86,92%. As disgenesias diagnosticadas não mostraram diferenças de ocorrências entre os gêneros e localização nos arcos superior e inferior. O presente estudo mostra a importância da observação radiográfica para detecção de disgenesias e elaboração de um plano de tratamento baseado na ocorrência delas.The aim of this research was to evaluate the dental disgenesis prevalence, in the patients submitted to orthodontic treatment in the city of Recife, between the years 1991 to 1999. This study was done by clinic handbooks analysis and also by radiographies. 551 clinic handbooks were checked up and 124 (22,5% showed those disgenesis. The results showed that 44 (7,99% of the anomalies were detected to the male sex, and 3 patients of this group also showed more than one type. Therefore 130 disgenesis were detected. The most detected prevalence was the hipodonty with 86,92%. The detected disgenesis did not show difference in occurrence between males and females patients; and also in the superior and inferior arches. The present study shows how important is the radiographic observation detecting disgenesis for a clinical schedule, according to the occurrence of them.

  17. Cárie dentária, disponibilidade de açúcar e fatores associados nas capitais brasileiras em 2003: um estudo ecológico

    Directory of Open Access Journals (Sweden)

    Michele Martins Gonçalves

    Full Text Available INTRODUÇÃO: A associação entre a disponibilidade de açúcar e a cárie dentária, utilizando-se dados populacionais, ainda não foi testada na população brasileira. OBJETIVO: Investigar a associação entre a experiência de cárie em crianças e a disponibilidade domiciliar de açúcar no Brasil, em 2003. Buscou-se ainda testar a provável influência de indicadores socioeconômicos e do acesso à água fluoretada. MATERIAL E MÉTODO: Este estudo ecológico analisou dados das 27 capitais brasileiras sobre cárie em crianças de cinco e 12 anos, e abastecimento de água fluoretada, obtidos do levantamento nacional de saúde bucal de 2003. Os dados sobre disponibilidade domiciliar de açúcar foram obtidos da Pesquisa de Orçamento Familiar (POF de 2003 e, sobre indicadores socioeconômicos, do Programa das Nações Unidas para o Desenvolvimento em 2000. Na análise estatística, foram utilizados testes de correlação e regressão linear simples e múltipla. RESULTADO: Não houve associação significativa entre a experiência de cárie em crianças de cinco anos e as variáveis independentes. Na idade de 12 anos, menor experiência de cárie foi correlacionada à maior aquisição de refrigerantes, ao maior tempo de fluoretação e ao IDH e à renda per capita mais elevados. O resultado da regressão linear múltipla, ajustado pelo tempo de fluoretação das águas, indicou que esta variável explica os níveis de cárie mais baixos. Após o ajuste pelos demais fatores, nenhuma variável foi associada à cárie. CONCLUSÃO: Não houve associação entre a experiência de cárie em crianças e a disponibilidade domiciliar de açúcar nas capitais brasileiras em 2003, quando indicadores socioeconômicos e presença de água fluoretada foram considerados na análise.

  18. Uso de la reología en la evaluación de la jalea dentífrica fluida

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    Nilia de la Paz Martín-Viaña

    2002-04-01

    Full Text Available Se estudió el comportamiento reológico de la jalea dentífrica fluida mediante el empleo de un rotoviscosímetro digital HAAKE y se determinó la viscosidad aparente con la utilización de un viscosímetro rotatorio Brookfield modelo RVF. La preparación se almacenó a diferentes condiciones térmicas. Se analizaron los resultados estadísticamente a través de un análisis de varianza para contrastar si existen diferencias significativas entre las medias de las poblaciones. Tras el estudio reológico se pudo llegar al criterio de que corresponde su comportamiento a un cuerpo con flujo no newtoniano pseudoplástico, con un buen grado de recuperación estructural. No se encontraron diferencias estadísticamente significativas con un nivel de confiabilidad del 95 % entre los valores de las medias de la viscosidad aparente de la preparación almacenada a diferentes temperaturas durante 48 semanas después de elaborada. La formulación diseñada resultó estable físicamente, al menos, bajo las condiciones y circunstancias experimentales en que se ha ensayado.The rheologic behavior of the fluid tooth gel was studied by using a HAAKE digital rotatory viscosimeter. The apparent viscosity was determined by a Brookfield RVF rotatory viscosimeter. The preparation was stored under different thermal conditions. The results were statistically analyzed through a variance analysis to know if there were significant differences among the means of the population. According to the rheologic study, it was concluded that its behavior corresponded to a body with non Newtonian pseudoplastic flow, with a good degree of structural recovery. Statistically significant differences were not found. A reliability level of 95 % was attained among the values of the means of the apparent viscosity of the preparation stored at different temperatures during 48 weeks after being made. The designed formulation proved to be physically stable, at least under the experimental

  19. Undergraduate medical students' empathy: current perspectives

    Directory of Open Access Journals (Sweden)

    Quince T

    2016-08-01

    Full Text Available Thelma Quince, Pia Thiemann, John Benson, Sarah Hyde Primary Care Unit, Department of Public Health and Primary Care, Institute of Public Health, University of Cambridge, Cambridge, UK Abstract: Empathy is important to patient care. It enhances patients’ satisfaction, comfort, self-efficacy, and trust which in turn may facilitate better diagnosis, shared decision making, and therapy adherence. Empathetic doctors experience greater job satisfaction and psychological well-being. Understanding the development of empathy of tomorrow's health care professionals is important. However, clinical empathy is poorly defined and difficult to measure, while ways to enhance it remain unclear. This review examines empathy among undergraduate medical students, focusing upon three main questions: How is empathy measured? This section discusses the problems of assessing empathy and outlines the utility of the Jefferson Scale of Empathy – Student Version and Davis's Interpersonal Reactivity Index. Both have been used widely to assess medical students' empathy. Does empathy change during undergraduate medical education? The trajectory of empathy during undergraduate medical education has been and continues to be debated. Potential reasons for contrasting results of studies are outlined. What factors may influence the development of empathy? Although the influence of sex is widely recognized, the impact of culture, psychological well-being, and aspects of undergraduate curricula are less well understood. This review identifies three interrelated issues for future research into undergraduate medical students' empathy. First, the need for greater clarity of definition, recognizing that empathy is multidimensional. Second, the need to develop meaningful ways of measuring empathy which include its component dimensions and which are relevant to patients' experiences. Medical education research has generally relied upon single, self-report instruments, which have

  20. Persistence of undergraduate women in STEM fields

    Science.gov (United States)

    Pedone, Maggie Helene

    The underrepresentation of women in science, technology, engineering, and mathematics (STEM) is a complex problem that continues to persist at the postsecondary level, particularly in computer science and engineering fields. This dissertation explored the pre-college and college level factors that influenced undergraduate women's persistence in STEM. This study also examined and compared the characteristics of undergraduate women who entered STEM fields and non-STEM fields in 2003-2004. The nationally representative Beginning Postsecondary Students Longitudinal Study (BPS:04/09) data set was used for analysis. BPS:04/09 study respondents were surveyed three times (NPSAS:04, BPS:04/06, BPS:04/09) over a six-year period, which enabled me to explore factors related to long-term persistence. Astin's Input-Environment-Output (I-E-O) model was used as the framework to examine student inputs and college environmental factors that predict female student persistence (output) in STEM. Chi-square tests revealed significant differences between undergraduate women who entered STEM and non-STEM fields in 2003-2004. Differences in student demographics, prior academic achievement, high school course-taking patterns, and student involvement in college such as participation in study groups and school clubs were found. Notably, inferential statistics showed that a significantly higher proportion of female minority students entered STEM fields than non-STEM fields. These findings challenge the myth that underrepresented female minorities are less inclined to enter STEM fields. Logistic regression analyses revealed thirteen significant predictors of persistence for undergraduate women in STEM. Findings showed that undergraduate women who were younger, more academically prepared, and academically and socially involved in college (e.g., lived on campus, interacted with faculty, participated in study groups, fine arts activities, and school sports) were more likely to persist in STEM

  1. Parâmetros faciais e dentários de referência para indicação do tratamento ortodôntico-cirúrgico em pacientes com deformidades dentofaciais padrão II

    OpenAIRE

    Silvia Augusta Braga Reis

    2008-01-01

    O objetivo do presente estudo foi determinar os parâmetros morfológicos, faciais e dentários, que devem ser utilizados como referência pelo profissional, ortodontista e cirurgião, para indicação do tratamento ortodôntico-cirúrgico em pacientes com deformidades dentofaciais do Padrão II. Foram selecionados 40 pacientes brasileiros, com crescimento finalizado, 26 do gênero feminino e 14 do masculino, com ângulo de convexidade facial maior que 12º e exposição gengival no sorriso igual ou menor a...

  2. Estudo clínico do tempo de fechamento de espaço e do movimento dentário durante a retratação de caninos entre dois tipos de braquetes

    OpenAIRE

    Monini, André da Costa [UNESP

    2012-01-01

    O desenvolvimento tecnológico na fabricação de braquete trouxe consigo a ideia de que a tecnologia empregada no aparelho pode representar aumento na velocidade de movimentação dentária. O propósito deste estudo foi avaliar a taxa de movimentação mensal de caninos e a perda de ancoragem ocorrida durante o movimento de retração de caninos por deslizamento entre dois tipos de braquetes diferentes, um autoligado e outro convencionalmente ligado, bem como diferenças entre os arcos superior e infer...

  3. Avaliação de uma nova matriz tridimensional no processo de reparo de alvéolos dentários em humanos para preservação do rebordo alveolar

    OpenAIRE

    Ana Claudia de Araujo Pires

    2010-01-01

    A preservação da arquitetura óssea alveolar, durante o processo de reparo do alvéolo dentário após exodontias, é um grande desafio clínico. É esperado que 40 a 60% do volume ósseo alveolar inicial sejam perdidos nos primeiros seis meses. O OsteoScaf é um novo substituto ósseo, desenvolvido pela Universidade de Toronto e representa uma alternativa promissora para a manutenção da integridade óssea alveolar nesse cenário. Esse material é uma matriz tridimensional trifásica reabsorvível e osteoco...

  4. Transição alimentar: problema comum à obesidade e à cárie dentária Changing from breastfeeding to family feeding: a common problem for both obesity and dental caries

    Directory of Open Access Journals (Sweden)

    Jefferson Traebert

    2004-06-01

    Full Text Available A obesidade, as doenças dela decorrentes e a cárie dentária têm no hábito alimentar um importante componente etiológico comum. Assim, o objetivo deste artigo foi revisar aspectos gerais da obesidade e da cárie dentária, enfocando a transição alimentar como problema comum ao desenvolvimento de ambas. As conseqüências da obesidade para a saúde são muitas, variando desde um maior risco de morte prematura até diversos problemas não fatais, mas debilitadores da qualidade de vida dos indivíduos. Os hábitos alimentares relacionados à obesidade podem também determinar uma maior prevalência de cárie dentária já que tanto a quantidade de sacarose ingerida quanto a freqüência de ingestão são importantes fatores envolvidos em sua etiologia. Os profissionais de saúde devem auxiliar e conscientizar os pais sobre os efeitos imediatos dos hábitos alimentares inadequados sobre a saúde da criança e do adolescente, principalmente em relação à obesidade e à cárie dentária.The dietary habits are important common etiological factors for both obesity and dental caries. The objective of this article was to review general aspects of obesity and dental caries focusing on the changing from breastfeeding to family feeding as an important common problem for the development of both diseases. Obesity has been defined as a nutritional disturbance with results in several correlated diseases. The obesity related dietary habits could result in an increment of dental caries because both the amount and the frequency of sucrose ingestion are important factors associated with the aetiology of the oral disease. Thus, health professionals should increase parent's awareness about the immediate effects of obesity upon child's and adolescent's both general and oral health.

  5. Avaliação da remodelação óssea em alvéolos dentários, após a aplicação do laser de baixa potência

    OpenAIRE

    Larissa Nogueira Soares Ribeiro

    2013-01-01

    Introdução: A terapia com laser de baixa potência (LBP) vem sendo utilizada em Odontologia com diversos objetivos, em especial o de diminuir o tempo de cicatrização de feridas cirúrgicas. Objetivo: O objetivo do presente estudo in vivo foi avaliar qualitativamente e quantitativamente o efeito da irradiação com LBP no processo de remodelação óssea após a extração dentária em ratos jovens. Material e Método: Foram utilizados 60 ratos Wistar, distribuídos aleatoriamente nos seguintes grupos: Gru...

  6. Cárie dentária segundo o nível socioeconômico em Itapetininga - SP = Dental caries according to the socioeconomic level in Itapetininga - SP

    Directory of Open Access Journals (Sweden)

    Rihs, Lilian Berta

    2005-01-01

    Full Text Available Tem sido demonstrada a influência de fatores sociais e econômicas na determinação da cárie dentária, tanto em sua prevalência quanto em sua severidade. Assim, buscou-se determinar a relação entre nível socioeconômico e cárie dentária, através de sua prevalência e severidade, além das necessidades de tratamento em crianças de 7 a 12 anos de idade. Examinaram-se 546 crianças, de escolas públicas e privadas do município de Itapetininga, SP, em 1998, selecionadas mediante processo amostral aleatório sistemático e os exames seguiram os critérios da OMS (1997. Os índices utilizados foram: ceod, CPOD, Índice de Cuidados (Care Index e Índice de Saúde Dentária (ISD. O nível socioeconômico foi determinado pela rede de ensino freqüentada. Utilizaram-se os testes Mann-Whitney e qui-quadrado com nível de significância de 5%. Entre os escolares, houve maior percentual de livres de cárie na rede privada, 49,7%, frente aos 29,5% da rede pública (p<0,05. Na rede pública, o CPOD e o ceod foram de 1,27 e 1,78, e na particular, foram de 0,72 e 1,17, respectivamente, ambos maiores na rede pública (p<0,05. Os escolares de ensino público apresentaram maior percentual de extração dentária do que os da rede privada (p<0,05. O Índice de Cuidados foi maior nos escolares de rede particular, 91,8% sendo 53,4% na pública (p<0,05. O ISD foi de 0,7 e 0,8, respectivamente, para escolares de rede pública e privada. Os escolares com nível socioeconômico mais elevado apresentaram melhores condições de saúde bucal no município de Itapetininga

  7. Effect of cyclic loading on fracture strength of endodontically treated teeth restored with conventional and esthetic posts Efeito da carga cíclica na resistência de dentes tratados endodonticamente restaurados com pinos dentários convencionais e estéticos

    Directory of Open Access Journals (Sweden)

    Anuar Antônio Xible

    2006-08-01

    core system after cyclic loading.INTRODUÇÃO: Os sistemas de núcleos intra-radiculares estéticos foram recentemente introduzidos no mercado. Não existem muitos trabalhos na literatura comparando seu comportamento em relação aos sistemas de pinos metálicos convencionais quando submetidos à testes com carga cíclica. OBJETIVOS: este estudo comparou a taxa de sobrevivência, resistência à fratura e modo de fratura de dentes tratados endodonticamente reconstruídos com sistemas de núcleos intra-radiculares metálicos convencionais e estéticos, restaurados com coroas de porcelana pura e submetidos à carga cíclica. MATERIAIS E MÉTODOS: trinta caninos tiveram as coroas removidas 1,5mm acima da junção cemento-esmalte e preparados para coroa de porcelana pura deixando 1,5mm de dentina acima do término do preparo. Os dentes foram distribuídos em 3 grupos de 10. O grupo 1 foi restaurado com pinos de cerâmica de zircônia e núcleos de preenchimento em cerâmica vítrea termo-injetada. O grupo 2 foi restaurado com pinos de resina composta reforçada por fibra de vidro e o grupo 3 com pinos de titânio. Nos grupos 2 e 3 foi usada resina composta reforçada com fibra de vidro como material para núcleo de preenchimento; os dentes foram restaurados com coroas totais e tanto os pinos quanto as coroas de porcelana foram cimentados com um sistema de cimentação resinosa de polimerização dupla. Os espécimes foram incluídos em resina acrílica e submetidos à uma carga de 250N por 500,000 ciclos, numa freqüência de 1,7Hz sendo em seguida submetidos à carga estática em uma máqina de testes universal até a falha. Os dados foram analisados estatisticamente com os testes ANOVA a 1 critério e Exato de Fischer (alfa=.05. RESULTADOS: a taxa de sobrevivência foi de 100%; os valores de resistência à fratura em N (DP foram: grupo 1 = 886,50(170,6, grupo 2 = 762,2(113,6 e grupo 3 = 768,9(72,9. Não houve diferença estatística de resistência à fratura entre os

  8. Uso do metronidazol como medicação intracanal em dentes com necrose pulpar e reação periapical: relato de caso = The use of metronidazol as an intracanal medication for teeth with pulpar necrosis and periapical reaction: case report

    Directory of Open Access Journals (Sweden)

    Carneiro, Sérgio Murilo Barbalho de Souza

    2005-01-01

    Full Text Available O objetivo desse trabalho foi comparar dois tratamentos endodônticos realizados em dentes com abscesso periapical crônico, em um mesmo paciente, empregando-se medicações intracanais diferentes. Para isso foram relatados dois casos clínicos de tratamentos endodônticos em dois dentes (31 e 41, nos quais foram empregados a mesma técnica de preparo biomecânico e obturação, variando apenas a medicação intracanal, pois no dente 31 foi empregada uma pasta a base de hidróxido de cálcio (Calen e no dente 41, o metronidazol na forma de gel ginecológico. Após um ano de proservação dos tratamentos realizados, verificou-se reparação dos tecidos periapicais em ambos os dentes, concluindo-se que, nesse caso, a variação da medicação intracanal não interferiu no resultado do tratamento instituído e que o metronidazol pode ser uma alternativa viável como coadjuvante na terapia endodôntica desse tipo de patologia

  9. [Self-esteem of nursing undergraduate students].

    Science.gov (United States)

    Vianna, Lucila Amaral; Bomfim, Graziela Fernanda; Chicone, Gisele

    2002-01-01

    This study evaluates the self-esteem of undergraduate students of nursing, that through a workshop developed mechanisms for improving their self-esteem, considering that this is the most propitious time for students to multiply health care actions. the research was carried out with 156 undergraduate students of the third year. Socio-drama techniques of Neurolinguistics were used and the evaluation was done according to Minayo. It was possible to observe that students usually confuse self-esteem and self-image, and that both are stereotyped for for men and women. As nurses are always worried about the client/patient's life quality, they neglect themselves. In this case, the Workshops were essential for the students to rescue interior knowledge about themselves, and to realize that in order to take good care of clients/patients, they must be physically and psychologically healthy.

  10. Positron Annihilation in the Undergraduate Laboratory

    Science.gov (United States)

    Engbrecht, Jason

    2017-04-01

    While there are a variety of undergraduate laboratory experiments in the literature, they tend to focus on specific positron experiments and use specialized equipment that limit their flexibility. Here we present a positron spectroscopy experimental apparatus designed for the undergraduate lab. Rather than specialized pulse processing the apparatus utilizes a PC oscilloscope as its primary data acquisition utility with pulse processing happening in software instead of hardware. This allows the apparatus to explore a variety of physical phenomena with the positron annihilation including material science, 2 and 3 gamma annihilation properties, polarimetry via Compton scattering, QED tests, and local hidden variable theories. The supporting software is flexible and allows students to pursue these experiments through exploration rather than simply supporting data acquisition. St. Olaf College.

  11. Undergraduate Research: Importance, Benefits, and Challenges.

    Science.gov (United States)

    Petrella, John K; Jung, Alan P

    Developing and maintaining undergraduate research programs benefits students, faculty mentors, and the university. Incorporating a research component along with a sound academic foundation enables students to develop independent critical thinking skills along with oral and written communication skills. The research process impacts valuable learning objectives that have lasting influence as undergraduates prepare for professional service. Faculty members at teaching intensive institutions can enhance learning experiences for students while benefiting from a productive research agenda. The university in turn benefits from presentations and publications that serve to increase visibility in the scientific community. Whether projects are derived through student-generated or mentor-generated means, students benefit from completion of exposure to the hypothesis-driven scientific method.

  12. Dimensional stability of distances between posterior teeth in maxillary complete dentures Estabilidade dimensional de distâncias entre dentes posteriores em prótese total superior

    Directory of Open Access Journals (Sweden)

    Rafael Leonardo Xediek Consani

    2006-09-01

    Full Text Available The aim of this study was to assess the displacement of posterior teeth in maxillary complete dentures stored in water at 37°C. Twenty acrylic resin-based maxillary complete dentures were constructed with the anterior teeth arranged in normal overlap and the posterior teeth in Angle class I. Metallic pins were placed on the labial cusp of the first premolars (PM, and on the mesiolabial cusp of the second molars (M. The final acrylic resin pressing was made in a metallic flask with aid of the RS tension system, and polymerized in a moist-hot cycle at 74°C for 9 hours. The dentures were deflasked after cooling in their own polymerizing water or after cooling in polymerizing water plus bench storage for 3 hours, and stored in water at 37°C for periods of 7, 30, and 90 days. Following deflasking and after each storage period tested, the PM-PM (premolar to premolar, M-M (molar to molar, LPM-LM (left premolar to left molar, and RPM-RM (right premolar to right molar distances were measured with an STM Olympus microscope, with an accuracy of 0.0005 mm. Collected data were submitted to ANOVA and Tukey's test (5%. There was no statistically significant difference for the PM-PM, M-M, and LPM-LM distances after all storage periods when the flask cooling methods were considered. With exception of the RPM-RM distance after the 30-days water plus bench storage period, the other distances remained statistically stable.O propósito deste trabalho foi verificar a movimentação de dentes posteriores em prótese total superior armazenada em água a 37°C. Vinte próteses totais superiores foram confeccionadas com resina acrílica, com os dentes anteriores em transpasse normal e os posteriores em Classe I de Angle. Pinos metálicos foram colocados na cúspide vestibular dos primeiros pré-molares (PM e cúspide mésio-vestibular dos segundos molares (M. A prensagem final da resina acrílica foi feita em mufla metálica com auxílio do dispositivo RS de contens

  13. Studying charged particle optics: an undergraduate course

    Energy Technology Data Exchange (ETDEWEB)

    Ovalle, V [Instituto de Fisica, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza s/n0. Gragoata, Niteroi, 24210-346 Rio de Janeiro (Brazil); Otomar, D R [Instituto de Fisica, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza s/n0. Gragoata, Niteroi, 24210-346 Rio de Janeiro (Brazil); Pereira, J M [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro (Brazil); Ferreira, N [Instituto de Fisica, Universidade Federal Fluminense, Av. Gal. Milton Tavares de Souza s/n0. Gragoata, Niteroi, 24210-346 Rio de Janeiro (Brazil); Pinho, R R [Departamento de Fisica-ICE, Universidade Federal de Juiz de Fora, Campus Universitario, 36036-900, Juiz de Fora, MG (Brazil); Santos, A C F [Instituto de Fisica, Universidade Federal do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro (Brazil)

    2008-03-12

    This paper describes some computer-based activities to bring the study of charged particle optics to undergraduate students, to be performed as a part of a one-semester accelerator-based experimental course. The computational simulations were carried out using the commercially available SIMION program. The performance parameters, such as the focal length and P-Q curves are obtained. The three-electrode einzel lens is exemplified here as a study case.

  14. System design projects for undergraduate design education

    Science.gov (United States)

    Batill, S. M.; Pinkelman, J.

    1993-01-01

    Design education has received considerable in the recent past. This paper is intended to address one aspect of undergraduate design education and that is the selection and development of the design project for a capstone design course. Specific goals for a capstone design course are presented and their influence on the project selection are discussed. The evolution of a series of projects based upon the design of remotely piloted aircraft is presented along with students' perspective on the capstone experience.

  15. Psychological Factors Influencing Life Satisfaction of Undergraduates

    OpenAIRE

    Ajayi, Olubukola; Adewumi, Bukunmi

    2017-01-01

    This study was designed to assess the psychological factors influencing life satisfaction of undergraduates. The instruments used were Perceived Stress Scale (PSS), Wong and Law Emotional Intelligence Scale (WLEIS), Rosenberge Self-esteem Scale (RSS), and Satisfaction with Life Scale (SWLS). A total number of 190 participants were purposively selected across various faculties in Ekiti State University. Four hypotheses were tested using Independent t-test to find the effects of perceived stres...

  16. Providing Real Research Opoportunities to Undergraduates

    Science.gov (United States)

    Ragozzine, Darin

    2016-01-01

    The current approach to undergraduate education focuses on teaching classes which provide the foundational knowledge for more applied experiences such as scientific research. Like most programs, Florida Institute of Technology (Florida Tech or FIT) strongly encourages undergraduate research, but is dominated by content-focused courses (e.g., "Physical Mechanics"). Research-like experiences are generally offered through "lab" classes, but these are almost always reproductions of past experiments: contrived, formulaic, and lacking the "heart" of real (i.e., potentially publishable) scientific research. Real research opportunities 1) provide students with realistic insight into the actual scientific process; 2) excite students far more than end-of-chapter problems; 3) provide context for the importance of learning math, physics, and astrophysics concepts; and 4) allow unique research progress for well-chosen problems. I have provided real research opportunities as an "Exoplanet Lab" component of my Introduction to Space Science (SPS1020) class at Florida Tech, generally taken by first-year majors in our Physics, Astronomy & Astrophysics, Planetary Science, and Astrobiology degree programs. These labs are a hybrid between citizen science (e.g., PlanetHunters) and simultaneously mentoring ~60 undergraduates in similar small research projects. These projects focus on problems that can be understood in the context of the course, but which benefit from "crowdsourcing". Examples include: dividing up the known planetary systems and developing a classification scheme and organizing them into populations (Fall 2013); searching through folded light curves to discover new exoplanets missed by previous pipelines (Fall 2014); and fitting n-body models to all exoplanets with known Transit Timing Variations to estimate planet masses (Fall 2015). The students love the fact that they are doing real potentially publishable research: not many undergraduates can claim to have discovered

  17. Undergraduate paramedic students cannot do drug calculations

    Science.gov (United States)

    Eastwood, Kathryn; Boyle, Malcolm J; Williams, Brett

    2012-01-01

    BACKGROUND: Previous investigation of drug calculation skills of qualified paramedics has highlighted poor mathematical ability with no published studies having been undertaken on undergraduate paramedics. There are three major error classifications. Conceptual errors involve an inability to formulate an equation from information given, arithmetical errors involve an inability to operate a given equation, and finally computation errors are simple errors of addition, subtraction, division and multiplication. The objective of this study was to determine if undergraduate paramedics at a large Australia university could accurately perform common drug calculations and basic mathematical equations normally required in the workplace. METHODS: A cross-sectional study methodology using a paper-based questionnaire was administered to undergraduate paramedic students to collect demographical data, student attitudes regarding their drug calculation performance, and answers to a series of basic mathematical and drug calculation questions. Ethics approval was granted. RESULTS: The mean score of correct answers was 39.5% with one student scoring 100%, 3.3% of students (n=3) scoring greater than 90%, and 63% (n=58) scoring 50% or less, despite 62% (n=57) of the students stating they ‘did not have any drug calculations issues’. On average those who completed a minimum of year 12 Specialist Maths achieved scores over 50%. Conceptual errors made up 48.5%, arithmetical 31.1% and computational 17.4%. CONCLUSIONS: This study suggests undergraduate paramedics have deficiencies in performing accurate calculations, with conceptual errors indicating a fundamental lack of mathematical understanding. The results suggest an unacceptable level of mathematical competence to practice safely in the unpredictable prehospital environment. PMID:25215067

  18. Action learning in undergraduate engineering thesis supervision

    OpenAIRE

    Stappenbelt, Brad

    2017-01-01

    In the present action learning implementation, twelve action learning sets were conducted over eight years. The action learning sets consisted of students involved in undergraduate engineering research thesis work. The concurrent study accompanying this initiative investigated the influence of the action learning environment on student approaches to learning and any accompanying academic, learning and personal benefits realised. The influence of preferred learning styles on set function and s...

  19. Plasma Physics Research at an Undergraduate Institution

    Science.gov (United States)

    Padalino, Stephen

    2007-11-01

    Undergraduate research experiences have motivated many physics majors to continue their studies at the graduate level. The Department of Physics and Astronomy at SUNY Geneseo, a primarily undergraduate institution, recognizes this simple reality and is committed to ensuring research opportunities are available to interested majors beginning as early as their freshman year. Every year for more than a decade, as many as two dozen students and 8 faculty members have worked on projects related to high energy density physics and inertial confinement fusion during the summer months and the academic year. By working with their research sponsors, it has been possible to identify an impressive number of projects suitable for an institution such as Geneseo. These projects tend to be hands-on and require teamwork and innovation to be successful. They also take advantage of in-house capabilities such as the 2 MV tandem pelletron accelerator, a scanning electron microscope, a duoplasmatron ion deposition system and a 64 processor computing cluster. The end products of their efforts are utilized at the sponsoring facilities in support of nationally recognized programs. In this talk, I will discuss a number of these projects and point out what made them attractive and appropriate for an institution like Geneseo, the direct and indirect benefits of the research opportunities for the students and faculty, and how the national programs benefited from the cost-effective use of undergraduate research. In addition, I will discuss the importance of exposure for both students and faculty mentors to the larger scientific community through posters presentations at annual meetings such as the DPP and DNP. Finally, I will address the need for even greater research opportunities for undergraduate students in the future and the importance of establishing longer ``educational pipelines'' to satisfy the ever growing need for top-tier scientists and engineers in industry, academia and the

  20. EVALUATING THE ASSESSMENT OF UNDERGRADUATE THESIS EXAMINATION

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    Adip Arifin

    2017-12-01

    Full Text Available Thesis examination is one of the crucial phases for students in undergraduate level. During the examination, they are required to perform best to get the maximum score which commonly is equal to six credits. Looking at the big portion of credit, the examination highly determines the student‘s GPA at last. In order to get the accurate and fair score, the appropriate assessment must be implemented by the board of examiners. The form of assessment may vary from one institution to another. This paper is aimed at discussing as well as evaluating the assessment of undergraduate thesis examination at STKIP PGRI Ponorogo, East Java, Indonesia. The evaluation was based on the principles of good assessment adapted from Brown (2003 comprised of practicality, reliability, validity, and authenticity. Based on the result of evaluation, the form of assessment on undergraduate thesis examination administered at STKIP PGRI Ponorogo hasn‘t fully fulfilled the principles of good assessment. The findings also revealed that some assessment indicators need to be improved, such as the formulation of statement, the number of assessment item, and the technical procedure on how to administer the assessment.

  1. Assertiveness training for undergraduate midwifery students.

    Science.gov (United States)

    Warland, Jane; McKellar, Lois; Diaz, Monica

    2014-11-01

    Assertiveness can be defined as an interpersonal behaviour that promotes the fact all people in a relationship are equally important. All health professionals including midwives must work with and care for people. At times this will include facilitating interactions that require skilful negotiation and assertiveness. Yet embedding assertiveness education into undergraduate midwifery curricula has not been widely adopted. This paper explores one method of delivering assertiveness training in an undergraduate midwifery course and provides comment on the effectiveness of this strategy in developing assertiveness skills in a cohort of undergraduate midwifery students. We used an assertiveness survey which was administered immediately before and 3-4 months after an assertiveness training workshop. All students (n = 55) attending the training day were invited to participate. Of these 41 (77% response) chose to participate in the pre intervention survey and 32 participated (9 students lost to follow-up) in the follow up survey. There was an overall improvement in self-perceived assertiveness scores following the assertiveness training workshop. These findings provide encouraging evidence that educational institutions that offer specific and targeted assertiveness education will be rewarded with more assertive graduates. Copyright © 2014 Elsevier Ltd. All rights reserved.

  2. Undergraduate medical research: the student perspective

    Directory of Open Access Journals (Sweden)

    Louise N. Burgoyne

    2010-09-01

    Full Text Available Background: Research training is essential in a modern undergraduate medical curriculum. Our evaluation aimed to (a gauge students’ awareness of research activities, (b compare students’ perceptions of their transferable and research-specific skills competencies, (c determine students’ motivation for research and (d obtain students’ personal views on doing research. Methods: Undergraduate medical students (N=317 completed a research skills questionnaire developed by the Centre for Excellence in Teaching and Learning in Applied Undergraduate Research Skills (CETL-AURS at Reading University. The questionnaire assessed students’ transferable skills, research-specific skills (e.g., study design, data collection and data analysis, research experience and attitude and motivation towards doing research. Results: The majority of students are motivated to pursue research. Graduate entrants and male students appear to be the most confident regarding their research skills competencies. Although all students recognise the role of research in medical practice, many are unaware of the medical research activities or successes within their university. Of those who report no interest in a career incorporating research, a common perception was that researchers are isolated from patients and clinical practice. Discussion: Students have a narrow definition of research and what it entails. An explanation for why research competence does not align more closely with research motivation is derived from students’ lack of understanding of the concept of translational research, as well as a lack of awareness of the research activity being undertaken by their teachers and mentors. We plan to address this with specific research awareness initiatives.

  3. Dental fear among medical and dental undergraduates.

    Science.gov (United States)

    Hakim, H; Razak, I A

    2014-01-01

    To assess the prevalence and level of dental fear among health related undergraduates and to identify factors causing such fear using Kleinknecht's Dental Fear Survey (DFS) questionnaire. Kleinknecht's DFS questionnaire was used to assess dental fear and anxiety among the entire enrollment of the medical and dental undergraduates' of the University of Malaya. Overall response rate was 82.2%. Dental students reported higher prevalence of dental fear (96.0% versus 90.4%). However, most of the fear encountered among dental students was in the low fear category as compared to their medical counterpart (69.2 versus 51.2%). Significantly more medical students cancelled dental appointment due to fear compared to dental students (P = 0.004). "Heart beats faster" and "muscle being tensed" were the top two physiological responses experienced by the respondents. "Drill" and "anesthetic needle" were the most fear provoking objects among respondents of both faculties. Dental fear and anxiety are a common problem encountered among medical and dental undergraduates who represent future health care professionals. Also, high level of dental fear and anxiety leads to the avoidance of the dental services.

  4. Pattern of Smartphones Utilisation among Engineering Undergraduates

    Directory of Open Access Journals (Sweden)

    Muliati Sedek

    2014-04-01

    Full Text Available The smartphones ownership among the undergraduates in Malaysia was recorded as high. However, little was known about its utilization patterns, thus, the focus of this research was to determine the utilisation patterns of smartphones based on the National Education Technology Standard for Students (NETS.S among engineering undergraduates in Malaysia. This study was based on a quantitative research and the population comprised undergraduates from four Malaysian Technical Universities. A total of 400 questionnaires were analyzed. Based on the results, the undergraduates’ utilisation level of smartphones for communication and collaboration tool was at a high level. Meanwhile, utilisation for operations and concepts tool and research and information fluency tool were at moderate level. Finally, smartphones utilisation as digital citizenship tool and critical thinking, problem solving and creativity tool were both at a low level. Hence, more training and workshops should be given to the students in order to encourage them to fully utilise smartphones in enhancing the higher order thinking skills.

  5. Assessing Undergraduate Curriculum Through Student Exit Vectors

    Science.gov (United States)

    Keane, C. M.; Gonzales, L.; Martinez, C.

    2008-12-01

    One aspect of assessing the undergraduate curriculum is recognizing that the exit vector of the student is a metric in the absence of a structured assessment program. Detailed knowledge across all geosciences departments regarding the disposition of their recent baccalaureate recipients has been at best inconsistent, and in the case of about half of geoscience programs, non-existent. However, through examining of multiple datasets, a pattern of disposition of geosciences BS recipients emerges, providing a snapshot of the system- wide response to the system-wide "average" program. This pattern can also be juxtaposed against several frameworks of desired skill sets for recent graduates and the employment sectors likely to hire them. The question remains is can one deduce the effectiveness of the undergraduate program in placing graduates in their next step, whether in graduate school or the workplace. Likewise, with an increasing scrutiny on the "value" of an education, is the resulting economic gain sufficient for the student, such that programs will be viewed as sustainable. A factor in answering this question is the importance of the undergraduate program in the ultimate destination of the professional. Clear pathways exist for "optimal" schools for the production of new faculty and new industry professionals, but is it possible to identify those trends further up the educational pipeline? One major mechanism to examine the undergraduate program effectiveness related to exit vectors is to look at hiring trends witnessed related to markedly different program structures, such as those at universities outside of the United States. Rectifying academic programs between the United States and other national systems is often a challenge, but even given the substantial differences between depth of technical knowledge and breadth of education across these programs, in the end, the sum product is often viewed as roughly comparable. This paper will look at end

  6. Academic program models for undergraduate biomedical engineering.

    Science.gov (United States)

    Krishnan, Shankar M

    2014-01-01

    There is a proliferation of medical devices across the globe for the diagnosis and therapy of diseases. Biomedical engineering (BME) plays a significant role in healthcare and advancing medical technologies thus creating a substantial demand for biomedical engineers at undergraduate and graduate levels. There has been a surge in undergraduate programs due to increasing demands from the biomedical industries to cover many of their segments from bench to bedside. With the requirement of multidisciplinary training within allottable duration, it is indeed a challenge to design a comprehensive standardized undergraduate BME program to suit the needs of educators across the globe. This paper's objective is to describe three major models of undergraduate BME programs and their curricular requirements, with relevant recommendations to be applicable in institutions of higher education located in varied resource settings. Model 1 is based on programs to be offered in large research-intensive universities with multiple focus areas. The focus areas depend on the institution's research expertise and training mission. Model 2 has basic segments similar to those of Model 1, but the focus areas are limited due to resource constraints. In this model, co-op/internship in hospitals or medical companies is included which prepares the graduates for the work place. In Model 3, students are trained to earn an Associate Degree in the initial two years and they are trained for two more years to be BME's or BME Technologists. This model is well suited for the resource-poor countries. All three models must be designed to meet applicable accreditation requirements. The challenges in designing undergraduate BME programs include manpower, facility and funding resource requirements and time constraints. Each academic institution has to carefully analyze its short term and long term requirements. In conclusion, three models for BME programs are described based on large universities, colleges, and

  7. RESISTÊNCIA À REMOÇÃO POR TRAÇÃO E INFILTRAÇÃO MARGINAL DE COROAS TOTAIS FUNDIDAS, CIMENTADAS EM DENTES NATURAIS RECONSTRUÍDOS COM IONÔMERO DE VIDRO

    Directory of Open Access Journals (Sweden)

    Romualdo Caldeira de ANDRADA

    1997-07-01

    Full Text Available O objetivo deste estudo foi verificar a resistência à remoção por tração e a infiltração marginal de coroas totais fundidas cimentadas com cimento de ionômero de vidro, em dentes reconstruídos com duas formulações de cimento de ionômero de vidro, ou seja, Cermet e "mistura milagrosa", em comparação às coroas totais cimentadas em dentes com preparo para coroa total (sem reconstrução. Foram selecionados trinta molares superiores recém-extraídos, dez para cada condição experimental. Uma liga do sistema prata/estanho (M3 foi utilizada para obtenção das coroas totais. As amostras foram submetidas a ciclagens térmicas nas temperaturas de 5ºC, 37ºC e 55ºC, por sessenta minutos, durante sete dias. Para a última ciclagem térmica, foi utilizado o corante Rhodamina B a 0,1%, em solução aquosa. A seguir, as amostras foram lavadas e mantidas em condições ambientais por vinte e quatro horas, para serem levadas à máquina de ensaios universal, para os testes de remoção por tração axial. A análise de variância mostrou diferença estatisticamente significante, no nível de 5%, dos dentes sem reconstrução (controle, com relação aos dentes reconstruídos com "mistura milagrosa" e dentes reconstruídos com Cermet. Os dentes sem reconstrução apresentaram maior média aos testes de resistência por tração. Verificou-se, pela comparação individual entre as condições avaliadas, que o grupo reconstruído com "mistura milagrosa" e Cermet não mostrou diferença estatisticamente significante. Da mesma forma, foram elaboradas comparações individuais entre as condições avaliadas dos escores de infiltração, em que se pôde observar que houve significância entre os grupos de "mistura milagrosa" e Cermet com o grupo controle (dentes sem reconstrução. Os dentes reconstruídos com "mistura milagrosa" e Cermet não mostraram diferenças estatisticamente significantes entre siThe aim of this work was to measure tensile

  8. A sociodental approach in prosthodontic treatment decision making Uma abordagem social nas tomadas de decisão no tratamento com prótese dentária

    Directory of Open Access Journals (Sweden)

    Cláudio Rodrigues Leles

    2004-06-01

    Full Text Available A critical problem in the decision making process for dental prosthodontic treatment is the lack of reliable clinical parameters. This review discusses the limits of traditional normative treatment and presents guidelines for clinical decision making. There is a need to incorporate a sociodental approach to help determine patient's needs. Adoption of the evidence-based clinical practice model is also needed to assure safe and effective clinical practice in prosthetic dentistry.Um problema crítico no processo de tomadas de decisão em prótese dentária é a falta de parâmetros clínicos confiáveis nas condutas clínicas de tratamento. A presente revisão descreve e discute alguns aspectos desse problema e apresenta diretrizes para as decisões clínicas a partir do levantamento de limitações inerentes ao tratamento normativo tradicional. Conclui-se que há necessidade de incorporação de uma abordagem sócio-odontológica na determinação de necessidades dos pacientes. A adoção de um modelo de práticas baseadas em evidências é essencial para assegurar práticas clínicas seguras e efetivas em prótese dentária.

  9. Cárie dentária e condições sócio-econômicas no Estado do Paraná, Brasil, 1996 Dental caries and socioeconomic conditions in the State of Paraná, Brazil, 1996

    OpenAIRE

    Márcia Helena Baldani; Paulo Capel Narvai; José Leopoldo Ferreira Antunes

    2002-01-01

    O presente estudo foi conduzido com o objetivo de analisar as relações entre cárie dentária e fatores sócio-econômicos no Estado do Paraná, Brasil. Foram reunidas informações sobre a prevalência de cárie dentária (CPO-D aos 12 anos) para os municípios do Estado, conforme dados oficiais disponibilizados pela Secretaria de Estado da Saúde. Pôde-se observar correlação significante entre o índice de cárie dentária nos municípios e vários indicadores de desenvolvimento social, através da análise d...

  10. Avaliação do risco de desenvolvimento de fluorose dentária através da ingestão total de flúor, em crianças de 18 a 36 meses, no município de Penedo - AL

    OpenAIRE

    Santos, Natanael Barbosa dos [UNESP

    2006-01-01

    A utilização do flúor como medida preventiva e terapêutica tem mudado o perfil da doença cárie dentária, no entanto o aumento da exposição a múltiplas fontes de flúor tem proporcionado uma preocupação constante sobre o aumento da prevalência e severidade da fluorose dentária. O objetivo da presente pesquisa foi analisar a ingestão total de flúor e avaliar o risco de desenvolvimento de fluorose dentária. A amostra foi composta por 55 crianças, de 18 a 36 meses de idade, que freqüentavam as cre...

  11. Fluorose dentária em incisivos superiores permanentes em crianças de escola pública do Rio de Janeiro, RJ Dental fluorosis in upper permanent incisors of public schoolchildren in Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Branca Heloísa de Oliveira

    2001-06-01

    Full Text Available OBJETIVO: Determinar a prevalência e a intensidade de fluorose dentária em crianças com idade entre 7 e 12 anos. MÉTODOS: A população de estudo foi constituída por 266 crianças matriculadas em uma escola pública do Município do Rio de Janeiro, RJ. As crianças tinham idades entre 7 e 12 anos e foram selecionadas pelo método de amostragem aleatória simples. Todos os exames foram feitos entre os meses de agosto e dezembro de 1999 por um único examinador treinado e calibrado (Kappa = 0,92. Depois da obtenção do consentimento dos pais, as crianças tiveram seus incisivos superiores permanentes inspecionados sob luz natural. Os dentes foram previamente limpos e secos com rolos de algodão. Os critérios de Russel foram empregados, no diagnóstico diferencial, entre fluorose dentária e opacidades decorrentes de outras causas. O índice de Thylstrup e Fejerskov foi utilizado na determinação da intensidade de fluorose. RESULTADOS: A prevalência de fluorose foi igual a 7,9% (IC 95%, 5,0-11,8. A intensidade variou de 1 a 3, sendo que 77% dos dentes afetados tiveram registros de grau 1. CONCLUSÃO: A fluorose dentária não se constitui em problema de saúde pública para a população estudada.OBJECTIVE: To assess the prevalence and severity of dental fluorosis in children aged 7 to 12. METHODS: The study population comprised 266 children aged 7 to 12 years, enrolled in a public school in the city of Rio de Janeiro, Brazil, selected using a simple random sample method. All examinations were carried out between August and December 1999 by a single trained and calibrated examiner (Kappa = 0.92. After obtaining their parents' consent the children had their upper permanent incisors examined under natural light. Their teeth were previously cleaned and dried with cotton rolls. The differential diagnosis between milder forms of dental fluorosis and nonfluoride enamel opacities was made according to Russel's diagnostic criteria. The severity of

  12. Desnutrição energético-protéica e cárie dentária na primeira infância Protein-energy malnutrition and early childhood caries

    Directory of Open Access Journals (Sweden)

    Dijane Pereira Costa

    2010-02-01

    Full Text Available Este estudo tem por objetivo investigar a relação existente entre a desnutrição energético-protéica e a cárie dentária precoce na primeira infância. Trata-se de uma comunicação, para a qual foi realizada uma revisão da literatura, a partir de análise documental de produção bibliográfica, baseada em levantamentos de periódicos e consultas a livros. Verificou-se que a cárie precoce na infância é altamente prevalente nas comunidades de baixa renda, nas quais a desnutrição é um fator comum e de grande relevância. Estudos mostram que crianças desnutridas tendem a apresentar defeitos estruturais no esmalte do dente, como também estão predispostas a um maior risco à cárie dentária. Portanto, uma deficiência energético-protéica durante a fase de desenvolvimento dentário (odontogênese tem demonstrado uma maior suscetibilidade à cárie dentária, atraso na cronologia de erupção e defeitos estruturais do esmalte (hipoplasia de esmalte, hipofunção das glândulas salivares e mudança na composição da saliva. Estes fatores podem ser os mecanismos pelos quais a desnutrição associa-se à cárie. Em conclusão, os estudos sugerem que a deficiência energético-protéica durante a odontogênese gera atraso na cronologia de erupção e defeitos estruturais no esmalte (hipoplasia, além de poder afetar as glândulas salivares, aumentando o risco de ocorrência da doença cárie. Estudos investigando associações entre desnutrição e cárie na primeira infância são de grande relevância para ampliar o conhecimento desta doença e o desenvolvimento de ações de promoção e de prevenção desse problema de saúde pública com aplicações nas áreas de nutrição e odontologia.This study aimed to investigate the relationship between protein-energy malnutrition and early childhood caries. For this communication, a review of the literature was performed, based on documental analysis of bibliographic searches, surveys of

  13. A Study on Emotional Healing Efficacy of Fiction for Undergraduate

    OpenAIRE

    Chen Su-May Sheih; Pi-Fen Chang Chien

    2014-01-01

    In modern society, undergraduates may encounter multiple pressures and thus feel the sense of alienation, anxiety, disturbance and depression. For undergraduates, reading can be independently conducted without the intervention of an instructor; therefore, undergraduates who feel reluctant to expose private emotions to counselors can help themselves through the reading of emotional healing books. This is the application of bibliotherapy. Among various resources, fiction can serve as an appropr...

  14. 20th Annual ASM Conference for Undergraduate Educators (ASMCUE)

    OpenAIRE

    Michelle Slone

    2013-01-01

    Delaware Technical Community College (DTCC) is one of the pilot schools involved in the Community College Undergraduate Research Initiative (CCURI) which is responding to the call for reform of undergraduate science education. The major tenet of this initiative is to engage students early in their course of study by embedding undergraduate research into the curriculum. At DTCC this is accomplished by incorporating research-based laboratories, case studies, and problem-based learning activitie...

  15. Teaching Chemical Equilibrium and Thermodynamics in Undergraduate General Chemistry Classes.

    Science.gov (United States)

    Banerjee, Anil C.

    1995-01-01

    Discusses some of the conceptual difficulties encountered by undergraduate students in learning certain aspects of chemical equilibrium and thermodynamics. Discusses teaching strategies for dealing with these difficulties. (JRH)

  16. Pamplin College establishes business diversity center and undergraduate program

    OpenAIRE

    Ho, Sookhan

    2007-01-01

    To better prepare students for a diverse and multicultural workplace, Virginia Tech's Pamplin College of Business has established a center and undergraduate studies program focusing on business diversity.

  17. Moral distress of nursing undergraduates: Myth or reality?

    Science.gov (United States)

    Rennó, Heloiza Maria Siqueira; Ramos, Flávia Regina Souza; Brito, Maria José Menezes

    2016-05-18

    During their education process, nursing undergraduates experience ethical conflicts and dilemmas that can lead to moral distress. Moral distress can deprive the undergraduates of their working potential and may cause physical and mental health problems. We investigated the experiences of the undergraduates in order to identify the existence of moral distress caused by ethical conflict and dilemmas experienced during their nursing education. This study was designed according to the principles of research with human beings and was approved by the Human Research Ethics Committee. A qualitative multiple-case study. Two federal higher education institutions were surveyed, from which 58 undergraduates in nursing participated in the study. The undergraduates were undergoing their professional training. The data were collected through focus groups and were submitted to thematic content analysis, with the resources of the ATLAS TI 7.0 software. Moral distress in undergraduates is a reality and was identified in three axes of analysis: (1) moral distress is experienced by undergraduates in the reality of healthcare services, (2) the teacher as a source of moral distress, and (3) moral distress as a positive experience. The undergraduates in nursing manifest moral distress in different stages of their education, particularly during their professional training. The academic community should reflect and seek solutions for the reality of moral distress in undergraduates. © The Author(s) 2016.

  18. Dynamic Undergraduate Climate Change Affinity Program: University of Delaware Climate Program for Undergraduates (CPUG)

    Science.gov (United States)

    Merrill, J.

    2017-12-01

    Multidisciplinary undergraduate climate change education is critical for students entering any sector of the workforce. The University of Delaware has developed a new interdisciplinary affinity program—UD Climate Program for Undergraduates (CPUG)—open to undergraduate students of all majors to provide a comprehensive educational experience designed to educate skilled climate change problem-solvers for a wide range of professional careers. The program is designed to fulfill all General Education requirements, and includes a residential community commitment and experiential learning in community outreach and problem solving. Seminars will introduce current popular press and research materials and provide practice in confirming source credibility, communications training, and psychological support, as well as team building. As undergraduates, members of the UD CPUG team will define, describe, and develop a solution or solutions for a pressing local climate challenge that has the potential for global impact. The choice of a challenge and approach to addressing it will be guided by the student's advisor. Students are expected to develop a practical, multidisciplinary solution to address the challenge as defined, using their educational and experiential training. Solutions will be presented to the UD community during the spring semester of their senior year, as a collaborative team solution, with enhancement through individual portfolios from each team member. The logic model, structure, curricular and co-curricular supports for the CPUG will be provided. Mechanisms of support available through University administration will also be discussed.

  19. Undergraduate Time Use and Academic Outcomes: Results from the University of California Undergraduate Experiences Survey 2006

    Science.gov (United States)

    Brint, Steven; Cantwell, Allison M.

    2010-01-01

    Background/Context: Previous research has established the significance of academic study time on undergraduate students' academic performance. The effects of other uses of time are, however, in dispute. Some researchers have argued that students involved in activities that require initiative and effort also perform better in class, while students…

  20. Diversity in the Undergraduate Curriculum: Perspectives Held by Undergraduate Students at a Predominantly European American University

    Science.gov (United States)

    Littleford, Linh Nguyen

    2013-01-01

    Undergraduate students (N = 932, 83.8% European Americans, 69.6% women) completed an online survey and reported their definitions of diversity, their attitudes toward incorporating diversity into the curriculum, and their motivations for learning about diversity issues. Findings revealed that students conceptualized diversity primarily in terms of…

  1. Pharmacovigilance teaching in UK undergraduate pharmacy programmes.

    Science.gov (United States)

    Smith, Melvyn P; Webley, Sherael D

    2013-03-01

    Pharmacists in the UK are able to report spontaneous adverse drug reactions (ADRs) to the Medicines and Healthcare Products Regulatory Authority. The level of reporting by UK pharmacists remains low. This could be explained by poor knowledge of ADR reporting. The primary objective of this study was to investigate the level of pharmacovigilance education provided to pharmacy students on undergraduate pharmacy programmes in the UK. A cross-sectional survey was used to obtain data relating to the teaching of pharmacovigilance within schools of pharmacy. The survey was designed to reveal whether core elements pertinent to pharmacovigilance and specifically to spontaneous reporting were taught and to what extent. All of the respondents taught pharmacovigilance within an assessed compulsory module. A small number (23%) did not include pharmacovigilance law within their syllabus. In 54%, the amount of time devoted to teaching pharmacy students about their role in pharmacovigilance was less than 4 h in the 4-year course; only one respondent spent approximately 20 h, the remaining respondents (38%) spent between 4 and 8 h. The amount of time dedicated to the teaching of pharmacovigilance on pharmacy undergraduate degree programmes is low. Considering the importance of spontaneous reporting in drug safety and the shift in the role of the pharmacists, more time may need to be devoted to pharmacovigilance on pharmacy undergraduate courses. By doing so, new pharmacists would be more informed of the important role they play in drug safety and thereby potentially help enhance the level of ADR reporting. Copyright © 2012 John Wiley & Sons, Ltd.

  2. Measuring Science Literacy in College Undergraduates

    Science.gov (United States)

    Impey, Chris David; Buxner, S. R.; Antonellis, J.; King, C.; Johnson, E.; CATS

    2010-01-01

    Initial results from a major study of scientific literacy are presented, involving nearly 10,000 undergraduates in science classes at a large Southwestern Land Grant public university over a 20-year period. The science content questions overlap with those in the NSF's Science Indicators series. About 10% of all undergraduates in the US take a General Education astronomy course, and NSF data and the work of Jon Miller show that the number of college science courses taken is the strongest predictor of civic scientific literacy. Our data show that gains in knowledge on any particular item through the time students graduate are only 10-15%. Among students who have taken most or all of their science requirements, one-in-three think that antibiotics kill viruses as well as bacteria, one-in-four think lasers work by focusing sound waves, one-in-five think atoms are smaller than electrons, and the same fraction is unaware that humans evolved from earlier species of animals and that the Earth takes a year to go around the Sun. The fraction of undergraduates saying that astrology is "not at all” scientific increases from 17% to a still-low 34% as they move through the university. Equally worrying, half of all science majors say that astrology is "sort of” or "very” scientific. Education majors - the cohort of future teachers - perform worse than average on most individual questions and in terms of their overall scientific literacy. Assuming the study institution is representative of the nation's higher education institutions, our instruction is not raising students to the level we would expect for educated citizens who must vote on many issues that relate to science and technology. We acknowledge the NSF for funding under Award No. 0715517, a CCLI Phase III Grant for the Collaboration of Astronomy Teaching Scholars (CATS) Program.

  3. Emotional response of undergraduates to cadaver dissection.

    Science.gov (United States)

    Wisenden, Patricia A; Budke, Katherine J; Klemetson, Chelsea J; Kurtti, Tana R; Patel, Chandi M; Schwantz, Trenda L; Wisenden, Brian D

    2018-03-01

    The most effective way to learn human anatomy is through cadaver dissection. Historically, cadaver dissection has been the provenance of professional schools. Increasingly, cadaver-based courses in human anatomy are shifting to the undergraduate level, which creates both problems and opportunities because of differences between undergraduate and graduate student populations. Anxiety associated with dissecting cadavers can create a barrier to learning, and ultimately, entry into the health and medical sciences for some demographic subpopulations of undergraduates. We surveyed 76 students in 2007 and 51 students in 2009 at four times in the semester to investigate the timing and sociodemographic predictors of anxiety over cadaver dissection. We followed this with a second survey of 44 students in 2014 to test the effect of humanization of cadaver donors (providing information about donor occupation and cause of death) to reduce student anxiety. Students experienced anxiety upon first exposure to cadaver dissection. Female students experienced greater anxiety than male students upon first exposure to cadavers but this effect was short-lived. Self-identified non-white, non-Christian students experienced sustained anxiety throughout the semester, likely because cadaver stress compounded social and financial stressors unique to international students. Humanization was effective in reducing anxiety in non-white, non-Christian students but had the unexpected effect of increasing anxiety in female students. We recommend that humanizing information be offered to students who seek it out, but not forced upon students for whom the information would only add to their stress. Clin. Anat. 31:224-230, 2018. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

  4. Cardiovascular Health of North Carolina Undergraduates.

    Science.gov (United States)

    Lai, Hsiao L; Ward, Rachel; Bolin, Paul

    2015-01-01

    Cardiovascular disease is highly prevalent in Eastern North Carolina (ENC). In this study, we investigated cardiometabolic risk in young adults of ENC by sampling entrant undergraduates at East Carolina University (ECU). From June to October of 2010, 525 undergraduates were screened for elevated body mass index (BMI), blood pressure, lipids, blood glucose, inactivity, smoking, history of diabetes or hypertension, and family history of coronary disease. Participants were classified as high-risk if they had 3 or more cardiovascular risk factors or as "MetS" if they satisfied the criteria for metabolic syndrome. Forty-four percent of those screened had 2 or more risk factors, 12.5% had 3 or more risk factors, and 1.3% met criteria for MetS. Low levels of high-density lipoprotein (27.6%), overweight status (27.2%), and inactivity (27.1%) were leading risks. Females had an increased risk of inactivity compared to males (relative risk [RR] = 1.81; 95% CI, 1.3-2.52). Blacks had a 4-fold higher risk of metabolic syndrome (RR = 4.21; 95% Cl, 1.0-18.4), and black females had a high risk for obesity (RR = 5.7; 95% CI, 2.5-13) and systolic blood pressure elevation (RR = 4.8; 95% Cl, 1.5-15). Students recognized cardiovascular disease as a valid risk to their well-being. ECU undergraduates have a high prevalence of multiple cardiovascular risk factors. High-risk and MetS students recognize cardiovascular disease as a significant health risk, but they mistakenly maintain the self-perception that they are healthy. Efforts to understand risk perception and personal strategies of risk application are needed for this population of young adults.

  5. Integrating Research Experiences into the Undergraduate Education

    Science.gov (United States)

    Bauer, Wolfgang

    2009-03-01

    During the last seven years Michigan State University has been able to increase the number of physics and astrophysics majors by more than a factor of two. Part of this increase can be attributed to introducing special first-year courses on computational physics and on laboratory techniques, designed exclusively for physics majors. Investing into strengthening the Society of Physics Students and Science Theatre and into increased outreach activities also plays a role. But the largest effect is due to integrating a wide variety of research experiences into the Michigan State undergraduate physics and astrophysics experience. An overview of these activities will be given, and ways to upscale these efforts will be discussed.

  6. Journal of Undergraduate Research, Volume I, 2001

    Energy Technology Data Exchange (ETDEWEB)

    Faletra, P.; Beavis, W.; Franz, K.; Musick, C.; Walbridge, S.E.; Myron, H.

    2001-01-01

    This is our first volume of the Undergraduate Journal. It is an approbation of the impressive research performed by summer interns under the guidance of their dedicated mentors. The full-length publications were chosen from a pool of submissions that were reviewed by many of the excellent scientists at our National Laboratories. Most of these students will pursue careers in science, engineering and technology and, hopefully, some of this talent will remain with our labs. We have also included about 125 abstracts that survived the review process. These were submitted from all of our participating National Laboratories.

  7. Privileging Peer Review: Implications for Undergraduates

    Directory of Open Access Journals (Sweden)

    Amy E. Mark

    2011-11-01

    Full Text Available Librarians and teaching faculty privilege peer review articles out of ideals rooted in academic culture more then for pedagogical reasons. Undergraduates would find greater benefit in the opportunity to search and critique sources related to their personal and creative interests as well as relevant to academic research projects. Librarians can adopt the role of change-agents by engaging relevant teaching faculty in discussions about the goal of research assignments relative to peer review literature. Framing this discussion is Paulo Freire’s theory of banking information discussed in Pedagogy of the Oppressed (2000.

  8. Mechatronic system design course for undergraduate programmes

    Science.gov (United States)

    Saleem, A.; Tutunji, T.; Al-Sharif, L.

    2011-08-01

    Technology advancement and human needs have led to integration among many engineering disciplines. Mechatronics engineering is an integrated discipline that focuses on the design and analysis of complete engineering systems. These systems include mechanical, electrical, computer and control subsystems. In this paper, the importance of teaching mechatronic system design to undergraduate engineering students is emphasised. The paper offers the collaborative experience in preparing and delivering the course material for two universities in Jordan. A detailed description of such a course is provided and a case study is presented. The case study used is a final year project, where students applied a six-stage design procedure that is described in the paper.

  9. Critiquing effectuation in the undergraduate entrepreneurship teaching

    DEFF Research Database (Denmark)

    Günzel-Jensen, Franziska; Robinson, Sarah

    effectuation it must be considered as a critical element from the initial meeting with the students. Teaching undergraduate students presents a range of challenges and teachers of entrepreneurship need to carefully consider how they approach teaching of effectuation in the classroom. Value....../Originality: This paper makes a two important contributions: First, we add to the literature on entrepreneurship education by informing the gap in our understanding of the mis-match between what we want to achieve and what we actually achieve in our classrooms when teaching effectuation. Second, we contribute...

  10. Undergraduate physics laboratory: Electrophoresis in chromatography paper

    Science.gov (United States)

    Hyde, Alexander; Batishchev, Oleg

    2015-12-01

    An experiment studying the physical principles of electrophoresis in liquids was developed for an undergraduate laboratory. We have improved upon the standard agarose gel electrophoresis experimental regime with a straightforward and cost-effective procedure, in which drops of widely available black food coloring were separated by electric field into their dye components on strips of chromatography paper soaked in a baking soda/water solution. Terminal velocities of seven student-safe dyes were measured as a function of the electric potential applied along the strips. The molecular mobility was introduced and calculated by analyzing data for a single dye. Sources of systematic and random errors were investigated.

  11. Summer Undergraduate Research Program: Environmental studies

    Energy Technology Data Exchange (ETDEWEB)

    McMillan, J. [ed.

    1994-12-31

    The purpose of the summer undergraduate internship program for research in environmental studies is to provide an opportunity for well-qualified students to undertake an original research project as an apprentice to an active research scientist in basic environmental research. The students are offered research topics at the Medical University in the scientific areas of pharmacology and toxicology, epidemiology and risk assessment, environmental microbiology, and marine sciences. Students are also afforded the opportunity to work with faculty at the University of Charleston, SC, on projects with an environmental theme. Ten well-qualified students from colleges and universities throughout the eastern United States were accepted into the program.

  12. STAZ: interactive software for undergraduate statistics.

    Science.gov (United States)

    Hatchette, V; Zivian, A R; Zivian, M T; Okada, R

    1999-02-01

    STAZ is an interactive computer program that demonstrates statistical concepts, many of which cannot be readily demonstrated using conventional methods. Use of dynamic graphics encourages active engagement with challenging statistical concepts. The program consists of 13 graphical demonstrations, most of which allow for interactive participation by students. A detailed Help file with guided explanations accompanies each demonstration. STAZ is a multiple document interface program that makes full use of Windows features, such as tiling, links, and multitasking. Designed to be used as a supplement for any undergraduate statistics course, STAZ may be used by either instructors in class-room settings or students working independently.

  13. Preparing and writing an undergraduate dissertation.

    Science.gov (United States)

    Hannigan, B; Burnard, P

    2001-12-01

    Nurses studying for undergraduate degrees are often required to produce a dissertation. Usually, this will be a piece of work of around 10,000 words in length. In this paper, we discuss the characteristics of a good dissertation, and discuss a range of s trategies which students might find useful as they work towards dissertation submission. Particular areas that we concentrate on include: getting started, working with supervisors, defining aclear topic area, planning work and timetabling, locating and critiquing literature, writing up the literature review, linking theory and practice, and knitting the dissertation together.

  14. The Undergraduate ALFALFA Team: A Model for Involving Undergraduates in Major Legacy Astronomy Research

    Science.gov (United States)

    Troischt, Parker; Koopmann, Rebecca A.; Haynes, Martha P.; Higdon, Sarah; Balonek, Thomas J.; Cannon, John M.; Coble, Kimberly A.; Craig, David; Durbala, Adriana; Finn, Rose; Hoffman, G. Lyle; Kornreich, David A.; Lebron, Mayra E.; Crone-Odekon, Mary; O'Donoghue, Aileen A.; Olowin, Ronald Paul; Pantoja, Carmen; Rosenberg, Jessica L.; Venkatesan, Aparna; Wilcots, Eric M.; Alfalfa Team

    2015-01-01

    The NSF-sponsored Undergraduate ALFALFA (Arecibo Legacy Fast ALFA) Team (UAT) is a consortium of 19 institutions founded to promote undergraduate research and faculty development within the extragalactic ALFALFA HI blind survey project and follow-up programs. The collaborative nature of the UAT allows faculty and students from a wide ​range of public and private colleges and especially those with small astronomy programs to develop scholarly collaborations. Components of the program include an annual undergraduate workshop at Arecibo Observatory, observing runs at Arecibo, computer infrastructure, summer and academic year research projects, and dissemination at national meetings (e.g., Alfvin et al., Martens et al., Sanders et al., this meeting). Through this model, faculty and students are learning how science is accomplished in a large collaboration while contributing to the scientific goals of a major legacy survey. In the 7 years of the program, 23 faculty and more than 220 undergraduate students have participated at a significant level. 40% of them have been women and members of underrepresented groups. Faculty, many of whom were new to the collaboration and had expertise in other fields, contribute their diverse sets of skills to ALFALFA ​related projects via observing, data reduction, collaborative research, and research with students. 142 undergraduate students have attended the annual workshops at Arecibo Observatory, interacting with faculty, graduate students, their peers, and Arecibo staff in lectures, group activities, tours, and observing runs. Team faculty have supervised 131 summer research projects and 94 academic year (e.g., senior thesis) projects. 62 students have traveled to Arecibo Observatory for observing runs and 46 have presented their results at national meetings. 93% of alumni are attending graduate school and/or pursuing a career in STEM. Half of those pursuing graduate degrees in Physics or Astronomy are women. This work has been

  15. Prevalência de cárie em dentes permanentes de escolares do Município de São Paulo, SP, 1970-1996 Dental caries prevalence in permanent teeth of schoolchildren in Brazil, 1970-1996

    Directory of Open Access Journals (Sweden)

    Paulo C Narvai

    2000-04-01

    Full Text Available OBJETIVO: Estudar a evolução da prevalência de cárie em dentes permanentes da população infantil do Município de São Paulo, SP, no período 1970-1996, com base em levantamento epidemiológico em escolares das redes pública e privada de ensino. MÉTODOS: Utilizando metodologia recomendada pela Organização Mundial da Saúde, foram examinados 2.491 escolares de 103 unidades das redes de ensino público e privado. Foi obtida amostra probabilística, com base no cadastro das escolas do município. Os elementos amostrais foram identificados ao acaso. RESULTADOS: Observou-se que de uma situação de prevalência "muito alta" de cárie dentária nos anos 60 e 70, a população de referência evoluiu positivamente, na idade-índice de 12 anos, para um quadro de "baixa" prevalência. CONCLUSÃO: Entre 1986 e 1996 o declínio na cárie dentária, aos 12 anos de idade, foi da ordem de 68,2% entre escolares do Município de São Paulo.OBJECTIVE: To assess the evolution of dental caries in permanent teeth of schoolchildren in S. Paulo City, Brazil, during the period of 1970-1996. METHODS: The World Health Organization methodology for oral health surveys was applied in 2,491 shoolchildren, both male and female from 103 public and private schools. A probabilistic sample stratified by age, school category, and city zones was obtained by the Education State Service data system. Computational resources were used. RESULTS: Data from the 1996 S.Paulo survey were compared with others data provided by studies such as the one conducted in the same city and the reference-population in the second half of the 20th century. In the 60s and 70s the DMF-T Index among 12-year-old schoolchildren was around 7.0. In 1986 it was 6.5 and in 1996 it was registered 2.1, a decline of 68%. CONCLUSION: Dental caries in permanent teeth among S. Paulo City 12-year-old schoolchildren changed from a "very high" to "low" prevalence.

  16. Perda dentária e a imagem do cirurgião-dentista entre um grupo de idosos Tooth loss and the image of the dentist in a group of senior citizens

    Directory of Open Access Journals (Sweden)

    Daniel Afonso Hiramatsu

    2007-08-01

    Full Text Available O presente estudo busca analisar as percepções, memórias e crenças de um grupo de idosos de origem japonesa quanto às perdas dentárias. Para o presente estudo, foram definidos em processo de amostragem aleatória simples quarenta indivíduos com critérios de inclusão a partir da geração (Issei e Nisei e condição bucal (edêntulos e dentados, formando quatro grupos com dez indivíduos cada. Foram realizadas entrevistas domiciliares, com os indivíduos que preencheram os critérios de inclusão-exclusão para cada grupo. Utilizando como estratégia metodológica a construção do Discurso do Sujeito Coletivo, foram definidas as categorias de análise: motivo das perdas dentárias, momento das perdas e o papel do cirurgião-dentista. Dificuldades de acesso à assistência odontológica e a naturalização da perda dentária constituem fatores sociais e culturais fortemente imbricados que resultam em edentulismo precoce. Dor e medo são sentimentos estritamente ligados à imagem do cirurgião-dentista, ainda que se reconheça uma evolução na odontologia, tanto com relação aos equipamentos, materiais e técnicas utilizadas quanto à formação e conduta do profissional.This study assesses perceptions, memories and beliefs about tooth loss in a group of Japanese-Brazilian senior citizens, selecting forty individuals through a random sampling process, with inclusion criteria related to their background (Issei/Nissei and oral status (edentulous/non-edentulous, divided into four groups, each with ten subjects. Home interviews were conducted with individuals complying with the inclusion/exclusion criteria established for each group. Using the construction of the Collective Subject Discourse as a methodological strategy, the analysis categories were defined: cause of tooth loss, time of tooth loss and the role of the dentist. Difficulties in accessing dental care and natural acceptance of tooth loss are social and cultural factors that are

  17. Undergraduate Certificate in Leadership Studies: An Opportunity for Seamless Learning

    Science.gov (United States)

    Guthrie, Kathy L.; Bovio, Becka

    2014-01-01

    In working to develop undergraduate student leadership capacity, Florida State University created the Undergraduate Certificate in Leadership Studies. This program, grounded in leadership theory and framed by a seamless learning model, has been influential in development of student leadership perceptions and capacity. This article addresses the…

  18. Use of Social Media by Agricultural Undergraduate Students in ...

    African Journals Online (AJOL)

    The study analysed the usage of social media sites by undergraduate agricultural students in selected Universities in Nigeria. Multi-stage sampling procedure was used to select 425 undergraduate agricultural students in Nigeria. Data were obtained with questionnaire and were presented using percentage, and mean.

  19. Curricular Changes in Accredited Undergraduate Programmes in Argentina

    Science.gov (United States)

    Coria, Maria Marta; Deluca, Monica; Martinez, Maria Eugenia

    2010-01-01

    This paper assesses the impact on the curricula of undergraduate programmes in Argentina of the quality assurance mechanism implemented by the National Commission for University Evaluation and Accreditation (CONEAU). The paper examines curricula changes in pharmacy, biochemistry and agriculture undergraduate programmes to show the major…

  20. Study habits and library usage among undergraduates in federal ...

    African Journals Online (AJOL)

    It is against this background that this study investigated the study habits and library usage among undergraduates in federal universities in South-West, Nigeria. The study adopted the survey research design. Questionnaire was used for data collection. Out of 2,086 undergraduate students from three federal universities ...

  1. Undergraduate Teaching and Learning Evaluation: Focus on the Mechanism

    Science.gov (United States)

    Dongmei, Zeng; Jiangbo, Chen

    2009-01-01

    It is obvious to all that the National Undergraduate Teaching and Learning Evaluation plan for higher education institutions launched in 2003 has promoted undergraduate teaching at universities and colleges. At the same time, however, the authors have also witnessed problems with the evaluation work itself, for example, unified evaluation…

  2. Making Data Management Accessible in the Undergraduate Chemistry Curriculum

    Science.gov (United States)

    Reisner, Barbara A.; Vaughan, K. T. L.; Shorish, Yasmeen L.

    2014-01-01

    In the age of "big data" science, data management is becoming a key information literacy skill for chemistry professionals. To introduce this skill in the undergraduate chemistry major, an activity has been developed to familiarize undergraduates with data management. In this activity, students rename and organize cards that represent…

  3. Self-Reported Sexual Functioning Concerns among Undergraduate Students

    Science.gov (United States)

    Tambling, Rachel B.; Reckert, Ashley

    2014-01-01

    Researchers who have studied sexual functioning concerns do not often focus their research on undergraduate populations, perhaps due to perceptions of universal sexual health among this population. The current study examined prevalence and type of sexual functioning concerns in a sample of 347 male and female undergraduate students. Sexual…

  4. Undergraduate and Graduate Enrollments of Blacks and Chicanos at UCB.

    Science.gov (United States)

    Koon, Jeff

    Data are presented concerning the enrollments of Black and Chicano graduate and undergraduate students at the University of California at Berkeley. Some problems, particularly those stemming from academic decision-making at the undergraduate level, are noted. A number of problematic academic decisions that are (were) likely to affect negatively…

  5. Undergraduate Medical Academic Performance is Improved by Scientific Training

    Science.gov (United States)

    Zhang, Lili; Zhang, Wei; Wu, Chong; Liu, Zhongming; Cai, Yunfei; Cao, Xingguo; He, Yushan; Liu, Guoxiang; Miao, Hongming

    2017-01-01

    The effect of scientific training on course learning in undergraduates is still controversial. In this study, we investigated the academic performance of undergraduate students with and without scientific training. The results show that scientific training improves students' test scores in general medical courses, such as biochemistry and…

  6. Inclusion of entrepreneurial competencies within the undergraduate programme

    DEFF Research Database (Denmark)

    Nielsen, Birgitte Woge

    2016-01-01

    3rd European Congress on Physiotherapy Education with a platform representation “Inclusion of entrepreneurial competencies within the undergraduate programme”2012.......3rd European Congress on Physiotherapy Education with a platform representation “Inclusion of entrepreneurial competencies within the undergraduate programme”2012....

  7. Food Consumption Patterns of Female Undergraduate Students in ...

    African Journals Online (AJOL)

    BACKGROUND: Studies on food intake in the UAE especially in relation to the student life are lacking. OBJECTIVE: To investigate eating habits of undergraduate students. METHODS: A cohort of 146 undergraduate students studying Physiology at Zayed University completed a semi-structured questionnaire. A student ...

  8. From Mentoring to Collaborating: Fostering Undergraduate Research in History

    Science.gov (United States)

    History Teacher, 2013

    2013-01-01

    The author of this essay argues that historians should join their colleagues in the sciences in creating supportive environments for undergraduate research. Despite the apparent hurdles to overcome, historians can devise effective undergraduate research experiences that mimic those occurring in the chemistry, biology, and psychology labs across…

  9. Beta: An Experiment in Funded Undergraduate Start-Up

    Science.gov (United States)

    Jones, Paul; Forbes-Simpson, Kellie; Maas, Gideon; Newbery, Robert

    2015-01-01

    This paper reports on an evaluation of a funded undergraduate project designed to enable student business start-up. The programme, entitled "Beta", provides undergraduate students with £1,500 of seed-corn funding. The key objective of the project is for the participants to exit it with a viable and legal business entity through which…

  10. Internet use by library and information science undergraduates in ...

    African Journals Online (AJOL)

    The study recommended that undergraduates should be trained to be ICT literate as well as be given increased access to internet facilities to enable them maximize the benefits of internet use. The study concluded that although there is a rise in the use of internet by undergraduates, they primarily use the internet for social ...

  11. Student Perceptions on Live-Case Projects: Undergraduate Marketing Research

    Science.gov (United States)

    Gundala, Raghava Rao; Singh, Mandeep; Baldwin, Andrew

    2014-01-01

    This paper is an investigation into undergraduate students' perceptions on use of live projects as a teaching pedagogy in marketing research courses. Students in undergraduate marketing research courses from fall 2009 to spring 2013 completed an online questionnaire consisting of 17 items. The results suggested that student understanding of…

  12. Self-Regulated Learning and Academic Achievement in Malaysian Undergraduates

    Science.gov (United States)

    Kosnin, Azlina Mohd

    2007-01-01

    This study is an investigation of the ability of self-regulated learning (SRL) as measured by the Motivated Strategies for Learning Questionnaires (MSLQ) to predict academic achievement among undergraduates in Malaysia. A total of 460 second-year engineering undergraduates from the Universiti Teknologi Malaysia participated in the study. Academic…

  13. Perception of undergraduates of University of Port Harcourt towards ...

    African Journals Online (AJOL)

    Aim: To assess the perception of undergraduates in University of Port Harcourt towards the use of condom. Methods: A cross-sectional questionnaire survey on the knowledge and use of condom among undergraduates of University of Port Harcourt. A systematic random sampling method was employed. Data collected was ...

  14. Undergraduate students' choice of special education programme as ...

    African Journals Online (AJOL)

    This study examined the undergraduate students' choice of special education programme as a career. A descriptive survey research method was adopted for the study. A total number of 100 undergraduate students from the special education department were randomly selected across the levels (100 to 400 levels).

  15. Internet use pattern of Undergraduate students at the University of ...

    African Journals Online (AJOL)

    This study examined the pattern of Internet use by undergraduate students at the University of Lagos, Main Campus, Akoka, Lagos, Nigeria. It revealed that the level of Internet use is low among undergraduate students from both the Faculty of Education and Faculty of Law. It also revealed that though majority of the students ...

  16. Undergraduate Teacher Candidate Perceptions Integrating Technology in Classroom Instruction

    Science.gov (United States)

    Anderson, Charlise Askew

    2016-01-01

    The purpose of this study was to analyze undergraduate teacher candidates' perceptions on integrating technology in the classroom. The study was embedded in the "Technology Pedagogical Content Knowledge" theoretical model. A sample of 143 undergraduate teacher candidates participated in the study. They were asked to address items on a…

  17. Investigating Undergraduate Science Students' Conceptions and Misconceptions of Ocean Acidification

    Science.gov (United States)

    Danielson, Kathryn I.; Tanner, Kimberly D.

    2015-01-01

    Scientific research exploring ocean acidification has grown significantly in past decades. However, little science education research has investigated the extent to which undergraduate science students understand this topic. Of all undergraduate students, one might predict science students to be best able to understand ocean acidification. What…

  18. Attitudes of undergraduates towards mental illness: A comparison ...

    African Journals Online (AJOL)

    illness are widespread among the general public. However, little is known about the attitudes of undergraduates to mental illness. Purpose. To compare the attitudes towards mental illness among undergraduates enrolled in nursing courses v. those enrolled in Bachelor of Business Management (BBM) courses. Methods.

  19. Use of electronic information resources among the undergraduate ...

    African Journals Online (AJOL)

    The study aimed at finding out the use of electronic information resources among undergraduate students in the Federal University of Technology, Akure. The study is based on descriptive survey design method and the population consists of 16,962 undergraduate students across different schools at the Federal University ...

  20. Teaching Psychological and Social Gerontology to Millennial Undergraduates

    Science.gov (United States)

    Siegal, Brittany; Kagan, Sarah H.

    2012-01-01

    Matters of development and generation may create barriers in teaching millennial undergraduates psychological and social gerontology. We introduce strategy to mitigate these barriers by teaching psychological and social gerontology as undergraduate honors courses, augmented with the use of social networking tools. We detail honors programming,…

  1. Teaching Motivational Interviewing to Undergraduates: Evaluation of Three Approaches

    Science.gov (United States)

    Madson, Michael B.; Schumacher, Julie A.; Noble, Jeremy J.; Bonnell, Melissa A.

    2013-01-01

    Many undergraduate psychology students assume positions as mental health paraprofessionals during or after college. The present study was a quasi-experimental evaluation of the effectiveness of teaching motivational interviewing (MI), a counseling approach that applies to many paraprofessional occupations. Results from 83 undergraduates indicated…

  2. Undergraduate Laboratory Exercises Specific to Food Spoilage Microbiology

    Science.gov (United States)

    Snyder, Abigail B.; Worobo, Randy W.; Orta-Ramirez, Alicia

    2016-01-01

    Food spoilage has an enormous economic impact, and microbial food spoilage plays a significant role in food waste and loss; subsequently, an equally significant portion of undergraduate food microbiology instruction should be dedicated to spoilage microbiology. Here, we describe a set of undergraduate microbiology laboratory exercises that focus…

  3. A new undergraduate course: Problems in nuclear engineering

    International Nuclear Information System (INIS)

    Larsen, Edward W.

    2011-01-01

    During the past five years, a new third-year undergraduate nuclear engineering course has been developed and taught at the University of Michigan. The course was created to correct certain deficiencies in the undergraduate nuclear engineering curriculum. Here we discuss the origins of the new course and our experience with it. (author)

  4. Interpreting Undergraduate Research Posters in the Literature Classroom

    Science.gov (United States)

    Manarin, Karen

    2016-01-01

    This essay explores the use of undergraduate research posters in English literature classrooms; at the same time, it argues for a scholarship of teaching and learning responsive to how meaning is constructed in the arts and humanities. Our scholarly practice requires interaction with texts and with each other, yet the undergraduate research paper…

  5. Use of Social Media by Agricultural Undergraduate Students in ...

    African Journals Online (AJOL)

    User

    The study analysed the usage of social media sites by undergraduate agricultural students in selected Universities in Nigeria. Multi-stage sampling procedure was used to select 425 undergraduate agricultural students in. Nigeria. Data were obtained with questionnaire and were presented using percentage, and mean.

  6. Infelicitous Use of Anaphoric "This" in Undergraduate Academic ...

    African Journals Online (AJOL)

    Infelicitous Use of Anaphoric "This" in Undergraduate Academic Writing. ... Legon Journal of the Humanities ... The objective of this paper is to describe the contexts of misuse of the anaphoric pronoun "this" in paragraphs composed by undergraduate students in their academic writing assignments and account for the ...

  7. Building Currency: Crafting New Channels for Undergraduate Communication Programs

    Science.gov (United States)

    Ellis, Vickie Shamp; Barbe, Kaylene; Fullbright, Kalyn G.

    2016-01-01

    University professional development funds, generally present for faculty, and often available for graduate students through grants or stipends, are seldom available to undergraduates. In this study, we assessed Giddens and Pierson's (1998) structuration theory in terms of how a professional development fund for undergraduates can impact the lives…

  8. Emotional Intelligence and Cognitive Moral Development in Undergraduate Business Students

    Science.gov (United States)

    McBride, Elizabeth A.

    2010-01-01

    This study examines relationships between emotional intelligence (EI) and cognitive moral development (CMD) in undergraduate business students. The ability model of emotional intelligence was used in this study, which evaluated possible relationships between EI and CMD in a sample of 82 undergraduate business students. The sample population was…

  9. Predictors of WhatsAPP 'Consumption' among undergraduate ...

    African Journals Online (AJOL)

    This paper examined cognitive, affective social-integrative and tension-release needs as predictors of WhatsApp 'consumption' among undergraduate students of Economics in Ambrose Alli University, Ekpoma. The population covered all the 808 undergraduate students in the Department of Economics from 100 to 400level ...

  10. Showing the Love: Predictors of Student Loyalty to Undergraduate Institutions

    Science.gov (United States)

    Vianden, Jörg; Barlow, Patrick J.

    2014-01-01

    This article advances the notion that undergraduates may be considered student-customers whose relationship with and loyalty to their institutions can be managed by college educators. The Student University Loyalty Instrument administered to 1,207 undergraduates at three comprehensive Midwestern institutions assessed the predictors of student…

  11. Undergraduates' History of Sexual Abuse, Parenting Style and ...

    African Journals Online (AJOL)

    Also investigated the association between perceived parenting styles of undergraduate students and risky sexual behaviour as well as their sexual abuse history with the aim of understanding how to resolve the problem associated with it. The study adopted descriptive survey with a sample of 2,300 undergraduate students ...

  12. Undergraduate Role Players as "Clients" for Graduate Counseling Students.

    Science.gov (United States)

    Anderson, Dana D.; And Others

    1989-01-01

    Describes two exercises in which undergraduates from abnormal psychology courses act as role-play clients for graduate counselor-trainees. Finds that the exercises seem to be educationally beneficial and may also help decrease undergraduates' negative stereotyping of persons with psychological problems. (KO)

  13. Relationship between Internet Addiction and Academic Performance among University Undergraduates

    Science.gov (United States)

    Akhter, Noreen

    2013-01-01

    The purpose of this study was to study the relationship between Internet addiction and academic performance among university undergraduates. The study also focused to examine the gender differences among students on internet addiction. The sample comprised of 359 university undergraduates. Their responses to the "Internet Addiction…

  14. Personal and Social Contributors to Dropout Risk for Undergraduate Students

    Science.gov (United States)

    McGaha, Valerie; Fitzpatrick, Jacki

    2005-01-01

    The purpose of the present study was to examine how personal characteristics (e.g., loneliness, interpersonal competence) and social characteristics (e.g., marginality) contributed to dropout risk among undergraduate students. The respondents (n=127 undergraduates) completed a questionnaire packet to assess all of the variables. Regression…

  15. An Introductory Research Experience in Mathematics for Undergraduates

    Science.gov (United States)

    Johnston, William W.; Webster, Jonathan E.; Wilson, Christopher James

    2017-01-01

    This paper offers a strategic initiative designed to boost the level of collaborative mathematical research involving undergraduate mathematics students at Butler University. It describes goals, program design, logistics, and outcomes for an 8-day intensive summer experience in which undergraduate mathematics majors engaged in original…

  16. An Analysis of the Sleep Quality of Undergraduate Students

    Science.gov (United States)

    Carter, Briana; Chopak-Foss, Joanne; Punungwe, Fadzai B.

    2016-01-01

    Background and Aims: The purpose of this study was to measure the sleep quality of a sample of undergraduate students and compare it to the recommendations for young adults from the National Sleep Foundation. Methods: A sample of undergraduate students from a midsized public university in the Southeast were recruited for this study (N = 86). The…

  17. A Q Factor Analysis of College Undergraduate Students' Study Behaviours

    Science.gov (United States)

    Yang, Yang; Bliss, Leonard B.

    2014-01-01

    This study attempted to better understand the study behaviours of undergraduate students by categorizing students into distinctive typologies based on their self-reported study behaviours through an exploratory approach--Q factor analysis. A sample of 152 undergraduate students completed a survey instrument, the Study Behavior Inventory. The Q…

  18. Use of electronic resources by undergraduates in two selected ...

    African Journals Online (AJOL)

    The purpose of this study is to know the extent of use of electronic resources and identify the type of electronic resources used by undergraduates in universities in Nigeria. Questionnaire was used for data collection. The study population includes all undergraduate students in the faculty of engineering in Niger Delta ...

  19. Gender differentials in Facebook use among undergraduates of ...

    African Journals Online (AJOL)

    This study examined the gender differentials in Facebook use among undergraduates of selected tertiary institutions in Enugu State. A total of 382 undergraduates (male-191, female-191, M age 19, M years of Facebook use 7 years) selected through a multi-stage technique provided data for the study on their Facebook use.

  20. The Undergraduate Origins of PhD Economists Revisited

    Science.gov (United States)

    Stock, Wendy A.; Siegfried, John J.

    2015-01-01

    The authors update prior analyses of the undergraduate origins of individuals who earn a PhD in economics in the United States. They include the list of the top institutions worldwide graduating the largest number of undergraduates who subsequently earn an economics PhD from a U.S. university and lists of American institutions with the largest…